feat: loading state and spinner + delete chunk option

frontend/src/api/endpoints.ts

@@ -27,6 +27,8 @@ const endpoints = {
     GET_CHUNKS: (docId: string, page: number, per_page: number) =>
       `/api/get_chunks?id=${docId}&page=${page}&per_page=${per_page}`,
     ADD_CHUNK: '/api/add_chunk',
+    DELETE_CHUNK: (docId: string, chunkId: string) =>
+      `/api/delete_chunk?id=${docId}&chunk_id=${chunkId}`,
   },
   CONVERSATION: {
     ANSWER: '/api/answer',

frontend/src/api/services/userService.ts

@@ -55,6 +55,8 @@ const userService = {
     apiClient.get(endpoints.USER.GET_CHUNKS(docId, page, perPage)),
   addChunk: (data: any): Promise<any> =>
     apiClient.post(endpoints.USER.ADD_CHUNK, data),
+  deleteChunk: (docId: string, chunkId: string): Promise<any> =>
+    apiClient.delete(endpoints.USER.DELETE_CHUNK(docId, chunkId)),
 };
 
 export default userService;