feat: 添加角色设定预留API 设定页(#768)

* add systemMessage

* perf: 优化代码和类型

* perf: 补全翻译和为以后做准备

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Co-authored-by: ChenZhaoYu <790348264@qq.com>

src/store/modules/index.ts

@@ -2,4 +2,5 @@ export * from './app'
 export * from './chat'
 export * from './user'
 export * from './prompt'
+export * from './settings'
 export * from './auth'