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/skill/Skill.ts

@@ -12,7 +12,7 @@ import { HType } from "../common/config/heroSet";
 import { SkillView } from "./SkillView";
 import { SDataCom } from "./SDataCom";
 import { Attrs } from "../common/config/HeroAttrs";
-import { SMoveDataComp } from "../hero/SMoveComp";
+import { SMoveDataComp } from "../skill/SMoveComp";
 
 /** Skill 模块 */
 @ecs.register(`Skill`)