(client) feat:实现实体动态创建，实体右键菜单

Co-authored-by: m0_75251201 <m0_75251201@noreply.gitcode.com>
Reviewed-on: http://47.107.252.169:3000/Roguelite-Game-Developing-Team/Gen_Hack-and-Slash-Roguelite/pulls/41

Client/Assets/Scripts/Entity/BuildingBase.cs

@@ -0,0 +1,10 @@
+namespace Entity
+{
+    public class BuildingBase:Entity
+    {
+        public override void TryMove()
+        {
+        }
+        
+    }
+}