Separated Assets to Resources (Engine assets) and Assets (Project specific)

+ AssetHierarchy: Exposed RootNode
+ ContentBrowserWindow: Fixed Empty Folder not being Leaf-Node
+ TreeNode: Added IsParentOf, IsChildOf and IsInSubtree.
    + Fixed InternalDeleteTreeAndChildren for null trees

GlitchyEditor/resources/Textures/EditorIcons.dds.ass

@@ -0,0 +1,23 @@
+{
+	AssetLoader = "EditorTextureAssetLoader",
+	Config = (GlitchyEditor.Assets.EditorTextureAssetLoaderConfig){
+		_samplerStateDescription = {
+			MinFilter = .Linear,
+			MagFilter = .Linear,
+			MipFilter = .Linear,
+			ComparisonFunction = .Never,
+			AddressModeU = .Clamp,
+			AddressModeV = .Clamp,
+			AddressModeW = .Clamp,
+			MipMinLOD = -3.40282347e+38,
+			MipMaxLOD = 3.40282347e+38,
+			MaxAnisotropy = 1,
+			BorderColor = {
+				R = 1,
+				G = 1,
+				B = 1,
+				A = 1
+			}
+		}
+	}
+}