feat: support admin assign superuser in admin ui (#12798)

### What problem does this PR solve?

Allow superuser(admin) to grant or revoke other superuser.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/services/admin-service.ts

@@ -157,6 +157,13 @@ export const createUser = (email: string, password: string) =>
     username: email,
     password,
   });
+
+export const grantSuperuser = (email: string) =>
+  request.put<ResponseData<void>>(api.adminSetSuperuser(email));
+
+export const revokeSuperuser = (email: string) =>
+  request.delete<ResponseData<void>>(api.adminSetSuperuser(email));
+
 export const getUserDetails = (email: string) =>
   request.get<ResponseData<[AdminService.UserDetail]>>(
     adminGetUserDetails(email),