优化更新代码，添加界面功能并整合

ShrlAlgo.RvKits/RvCivil/PlacementType.cs

@@ -0,0 +1,11 @@
+using System.ComponentModel;
+
+namespace ShrlAlgo.RvKits.RvCivil
+{
+    public enum PlacementType
+    {
+        [Description("墙面")] ByFace,
+        [Description("墙体")] ByWall,
+        [Description("房间")] ByRoom
+    }
+}