添加一些单例系统，材质方法

Runtime/MicroLibrary/Vector2Extend.cs

@@ -9,15 +9,6 @@ namespace XericLibrary.Runtime.MacroLibrary
 {
     public static class Vector2Extend 
     {
-		/// <summary>
-		/// 李若辰规定的编辑表面坐标转换方法
-		/// </summary>
-		/// <param name="vec"></param>
-		/// <returns></returns>
-		[MethodImpl(MethodImplOptions.AggressiveInlining)]
-		public static Vector3 ToVector3(this Vector2 vec)
-			=> new Vector3(vec.x, 0, vec.y);
-
 		[Obsolete("unfinished")]
 		public static Vector2 Projection(this Vector2 point, Vector3 start, Vector3 end)
 		{