feat: add new interfaces, services, and utilities for API integration

refactor: reorganize type definitions and improve type safety

build: add lodash and @types/lodash as dependencies

chore: update tsconfig and vite config for path aliases

style: improve code organization and add documentation comments

fix: correct type usage in LanguageSwitcher component

perf: implement snackbar provider for global notifications

test: add new test interfaces and utility functions

ci: update pnpm-lock.yaml with new dependencies

src/interfaces/request/file-manager.ts

@@ -0,0 +1,14 @@
+import { IPaginationRequestBody } from './base';
+
+export interface IFileListRequestBody extends IPaginationRequestBody {
+  parent_id?: string; // folder id
+}
+
+interface BaseRequestBody {
+  parentId: string;
+}
+
+export interface IConnectRequestBody {
+  fileIds: string[];
+  kbIds: string[];
+}