refactor(skill): 重构技能组件目录结构并重命名施法请求组件

将技能相关组件从hero目录移动到skill目录
将CastSkillRequestComp重命名为CSRequestComp
更新相关引用和文档说明

assets/script/game/common/ecs/position.meta

@@ -0,0 +1,12 @@
+{
+  "ver": "1.2.0",
+  "importer": "directory",
+  "imported": true,
+  "uuid": "d2d775f5-1dc0-455e-89d7-4a17f43170e0",
+  "files": [],
+  "subMetas": {},
+  "userData": {
+    "compressionType": {},
+    "isRemoteBundle": {}
+  }
+}