init: add workspace files

world/map/wd/santian.js

@@ -0,0 +1,4 @@
+this.inherits(ROOM);
+this.name = "三天门"
+this.desc = "这里是武当的三天门，一座高高的牌楼矗立眼前，不时地有进香客从你的身边走过。两边是几个菩萨，一条宽阔的石阶穿堂而过，直通笼罩在云雾中的天柱峰，望着堂中烟云缭绕的香炉，和周围虔诚的许愿人，令人肃然起敬。";
+this.exits = { "south": "wd/chaotian", "north": "wd/zijin" };