新增：新增修改密码功能，并优化部分以往代码

continew-admin-ui/src/api/system/user-center.ts

@@ -19,4 +19,12 @@ export interface UpdateBasicInfoReq {
 }
 export function updateBasicInfo(req: UpdateBasicInfoReq) {
   return axios.patch('/system/user/center/basic/info', req);
+}
+
+export interface UpdatePasswordReq {
+  oldPassword: string;
+  newPassword: string;
+}
+export function updatePassword(req: UpdatePasswordReq) {
+  return axios.patch('/system/user/center/password', req);
 }