Add member activity routes and UI enhancements in MembersView

Integrate member activity management by adding new routes in the backend for member activities. Update MembersView.vue to include a button for opening the activities modal and implement the MemberActivitiesDialog component for displaying member activities. Enhance the UI with new button styles for better user interaction.

backend/routes/memberActivityRoutes.js

@@ -0,0 +1,12 @@
+import express from 'express';
+import { authenticate } from '../middleware/authMiddleware.js';
+import { getMemberActivities } from '../controllers/memberActivityController.js';
+
+const router = express.Router();
+
+router.use(authenticate);
+
+router.get('/:clubId/:memberId', getMemberActivities);
+
+export default router;
+