feat: add backend

apps/server/middlewares/router.ts

@@ -0,0 +1,19 @@
+import KoaRouter from '@koa/router';
+import type Koa from 'koa';
+import type { Middleware } from './types.ts';
+import * as application from '../controllers/application.ts';
+
+export class Router implements Middleware {
+  private router: KoaRouter;
+  constructor() {
+    this.router = new KoaRouter({
+      prefix: '/api',
+    });
+    this.router.get('/application/list', application.list);
+  }
+
+  apply(app: Koa) {
+    app.use(this.router.routes());
+    app.use(this.router.allowedMethods());
+  }
+}