Added samples for burst and entities

Samples~/SamplesToolbarEntities/Module.NavigationTool.Editor.Entities.asmdef

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+{
+    "name": "Module.NavigationTool.Editor.Entities",
+    "rootNamespace": "Module.NavigationTool.Editor.Entities",
+    "references": [
+        "GUID:8339b3ce77cb32f489776d81010ad36c"
+    ],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": false,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

Samples~/SamplesToolbarEntities/Module.NavigationTool.Editor.Entities.asmdef.meta

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+fileFormatVersion: 2
+guid: 7f005006296b7aa41b589cd21e890d5c
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Samples~/SamplesToolbarEntities/Settings.meta

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+fileFormatVersion: 2
+guid: b746b07b87c4e4340aed5ad6a7bc3b64
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Samples~/SamplesToolbarEntities/Settings/ToolbarEntitiesSettings.cs

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+using Module.NavigationTool.Editor.Toolbar;
+using UnityEditor;
+
+namespace Module.NavigationTool.Editor.Entities.Toolbar
+{
+    internal sealed class ToolbarEntitiesSettings : IToolbarSettings
+    {
+        public string Title => "Entities";
+        
+        private const string PREF_PREFS_ENABLED = "ToolbarSettings.IsEntitiesEnabled";
+        
+        public static bool IsEnabled
+        {
+            get => EditorPrefs.GetBool(PREF_PREFS_ENABLED, false);
+            set => EditorPrefs.SetBool(PREF_PREFS_ENABLED, value);
+        }
+        
+        public void Initialize()
+        {
+        }
+
+        public void Draw()
+        {
+            IsEnabled = EditorGUILayout.Toggle("Enable Entities", IsEnabled);
+        }
+    }
+}

Samples~/SamplesToolbarEntities/Settings/ToolbarEntitiesSettings.cs.meta

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+fileFormatVersion: 2
+guid: 1077d6399eff29247a55c20578a2df1c

Samples~/SamplesToolbarEntities/ToolEntities.cs

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+using System;
+using JetBrains.Annotations;
+using Module.NavigationTool.Editor.Toolbar;
+using UnityEditor;
+using UnityEngine;
+using Object = UnityEngine.Object;
+
+namespace Module.NavigationTool.Editor.Entities.Toolbar
+{
+    [UsedImplicitly]
+    internal sealed class ToolEntities : AbstractToolbarDrawer
+    {
+        public override bool Visible => ToolbarEntitiesSettings.IsEnabled;
+        public override bool Enabled => true;
+        public override EToolbarPlacement Placement => EToolbarPlacement.Left;
+        public override int Priority => (int)EToolbarPriority.Low;
+        
+        protected override void Draw(Rect rect)
+        {
+            Styles.Initialize();
+
+            Rect rect0 = new Rect(rect.x, rect.y, 24f, rect.height);
+            Rect rect1 = new Rect(rect0.xMax, rect.y, 24f, rect.height);
+            Rect rect2 = new Rect(rect1.xMax, rect.y, 24f, rect.height);
+            Rect rect3 = new Rect(rect2.xMax, rect.y, 24f, rect.height);
+            Rect rect4 = new Rect(rect3.xMax, rect.y, 24f, rect.height);
+
+            if (GUI.Button(rect0, Styles.ICON_HIERARCHY, styles.button))
+                ToggleWindow("HierarchyWindow");
+            if (GUI.Button(rect1, Styles.ICON_COMPONENTS, styles.button))
+                ToggleWindow("ComponentsWindow");
+            if (GUI.Button(rect2, Styles.ICON_SYSTEMS, styles.button))
+                ToggleWindow("SystemScheduleWindow");
+            if (GUI.Button(rect3, Styles.ICON_ARCHETYPES, styles.button))
+                ToggleWindow("ArchetypesWindow");
+            if (GUI.Button(rect4, Styles.ICON_JOURNALING, styles.button))
+                ToggleWindow("EntitiesJournalingWindow");
+            
+            GUI.Label(rect0, Styles.LABEL_HIERARCHY, styles.labelCenter);
+            GUI.Label(rect1, Styles.LABEL_COMPONENTS, styles.labelCenter);
+            GUI.Label(rect2, Styles.LABEL_SYSTEMS, styles.labelCenter);
+            GUI.Label(rect3, Styles.LABEL_ARCHETYPES, styles.labelCenter);
+            GUI.Label(rect4, Styles.LABEL_JOURNALING, styles.labelCenter);
+        }
+
+        public override float CalculateWidth()
+        {
+            return 120.0f;
+        }
+        
+        private void ToggleWindow(string typeName)
+        {
+            string fullname = "Unity.Entities.Editor." + typeName + ", Unity.Entities.Editor";
+            Type type = Type.GetType(fullname, false, true);
+
+            if (type != null)
+            {
+                Object[] all = Resources.FindObjectsOfTypeAll(type);
+                
+                if (all.Length != 0)
+                {
+                    for (int i = 0; i < all.Length; i++)
+                    {
+                        if (all[i] is EditorWindow window)
+                            window.Close();
+                    }
+                }
+                else
+                {
+                    EditorWindow.GetWindow(type);
+                }
+            }
+            else
+            {
+                Debug.LogWarningFormat("Failed to find type with name: {0}", fullname);
+            }
+        }
+
+        private static class Styles
+        {
+            public static readonly GUIContent LABEL_HIERARCHY = new GUIContent(string.Empty, "Show/Hide entities hierarchy window");
+            public static readonly GUIContent LABEL_COMPONENTS = new GUIContent(string.Empty, "Show/Hide entities components window");
+            public static readonly GUIContent LABEL_SYSTEMS = new GUIContent(string.Empty, "Show/Hide entities systems window");
+            public static readonly GUIContent LABEL_ARCHETYPES = new GUIContent(string.Empty, "Show/Hide entities archetypes window");
+            public static readonly GUIContent LABEL_JOURNALING = new GUIContent(string.Empty, "Show/Hide entities journaling window");
+
+            public static GUIContent ICON_HIERARCHY;
+            public static GUIContent ICON_COMPONENTS;
+            public static GUIContent ICON_SYSTEMS;
+            public static GUIContent ICON_ARCHETYPES;
+            public static GUIContent ICON_JOURNALING;
+            
+            private static bool IS_INITIALIZED;
+            
+            private const string EditorDefaultResourcesPath = "Packages/com.unity.entities/Editor Default Resources/";
+            private const string EditorIconsLightDirectory = EditorDefaultResourcesPath + "icons/light";
+            private const string EditorIconsDarkDirectory = EditorDefaultResourcesPath + "icons/dark";
+
+            public static void Initialize()
+            {
+                if (IS_INITIALIZED)
+                    return;
+                
+                ICON_HIERARCHY = new GUIContent(LoadIcon("EntityGroup/EntityGroup"));
+                ICON_COMPONENTS = new GUIContent(LoadIcon("Component/Component"));
+                ICON_SYSTEMS = new GUIContent(LoadIcon("System/System"));
+                ICON_ARCHETYPES = new GUIContent(LoadIcon("Archetype/Archetype"));
+                ICON_JOURNALING = new GUIContent(LoadIcon("Journaling/Journaling"));
+                
+                IS_INITIALIZED = true;
+            }
+            
+            private static Texture2D LoadIcon(string name)
+            {
+                string iconsDirectory = EditorIconsLightDirectory;
+                
+                if (EditorGUIUtility.isProSkin)
+                    iconsDirectory = EditorIconsDarkDirectory;
+                
+                Object obj = AssetDatabase.LoadAssetAtPath(iconsDirectory + "/" + name + ".png", typeof(Texture2D));
+                return obj != null ? (Texture2D)obj : null;
+            }
+        }
+    }
+}

Samples~/SamplesToolbarEntities/ToolEntities.cs.meta

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+fileFormatVersion: 2
+guid: 460de731a77f02347b6ae7d35050a5f1