refactor(http): 重构http模块结构，优化文件组织

- 将alova和vue-query相关文件移动到http目录下
- 统一工具类文件到http/tools目录
- 删除冗余的service/app目录
- 更新相关引用路径
- 添加新的vue-query实现文件

src/http/interceptor.ts

@@ -1,7 +1,7 @@
 import { useUserStore } from '@/store'
 import { getEnvBaseUrl } from '@/utils'
 import { platform } from '@/utils/platform'
-import { stringifyQuery } from './queryString'
+import { stringifyQuery } from './tools/queryString'
 
 export type CustomRequestOptions = UniApp.RequestOptions & {
   query?: Record<string, any>