feat: add ExamStageActions component for exam fee handling

- Implemented ExamStageActions component to manage actions related to exam booking and payment based on application status.
- Added mock-base-query for development, providing a partial mock backend for various API endpoints.
- Introduced mock-data for simulating responses in the mock-base-query, covering profiles, vessels, applications, licenses, exams, and notifications.

apps/backoffice/src/app/store/index.ts

@@ -1,5 +1,9 @@
 import { configureStore } from '@reduxjs/toolkit';
-import { baseApi, configureTokenRefresh } from '@ema-platform/api';
+import {
+  baseApi,
+  configureSessionScope,
+  configureTokenRefresh,
+} from '@ema-platform/api';
 import {
   authReducer,
   signupReducer,
@@ -13,6 +17,9 @@ import type { AuthUser, CurrentProfile } from '@ema-platform/auth';
 import { preferencesReducer } from './preferences.slice';
 
 configureAuthStorage('ema-backoffice', true);
+// Cookies are shared across ports on localhost, so the API layer must be told
+// which app it belongs to — otherwise it reads the portal's token.
+configureSessionScope('ema-backoffice');
 
 const preloadedAuth = (() => {
   const token = authStorage.getToken();