add vikunja integration

backend/src/routes/vikunja.routes.ts

@@ -0,0 +1,12 @@
+import { Router } from 'express';
+import vikunjaController from '../controllers/vikunja.controller';
+import { authenticate } from '../middleware/auth.middleware';
+
+const router = Router();
+
+router.get('/tasks',   authenticate, vikunjaController.getMyTasks.bind(vikunjaController));
+router.get('/overdue', authenticate, vikunjaController.getOverdueTasks.bind(vikunjaController));
+router.get('/projects', authenticate, vikunjaController.getProjects.bind(vikunjaController));
+router.post('/tasks',  authenticate, vikunjaController.createTask.bind(vikunjaController));
+
+export default router;