- Validator: Added asset validators with material texture and shader validation

- Validator: Added option to enable/disable certain validators
- Project Settings: Fixed issue, where changes weren't always saved
- Unity: Removed deprecated warnings in Unity 6.4

Editor/Validators/Attributes/AttributeValidatorObsolete.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace Module.ProjectValidator.Editor
+{
+    internal sealed class AttributeValidatorObsolete : IAttributeValidator<ObsoleteAttribute>
+    {
+        public ValidatorResult Validate(ObsoleteAttribute attribute, object value)
+        {
+            return ValidatorResult.Create(EValidatorSeverity.Error, "Obsolete");
+        }
+    }
+}