Insanely huge initial commit

Assets/Extensions/Feel/MMTools/Editor/MMUtilities/MMLayerPropertyDrawer.cs

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+using UnityEditor;
+using UnityEngine;
+
+namespace MoreMountains.Tools
+{
+	[CustomPropertyDrawer(typeof(MMLayer))]
+	public class MMLayerPropertyDrawer : PropertyDrawer
+	{
+		#if  UNITY_EDITOR
+		public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+		{
+			EditorGUI.BeginProperty(position, GUIContent.none, property);
+			SerializedProperty layerIndex = property.FindPropertyRelative("_layerIndex");
+			position = EditorGUI.PrefixLabel(position, GUIUtility.GetControlID(FocusType.Passive), label);
+			if (layerIndex != null)
+			{
+				layerIndex.intValue = EditorGUI.LayerField(position, layerIndex.intValue);
+			}
+			EditorGUI.EndProperty();
+		}
+		#endif
+	}
+}