chore: add gateway scaffold

src/routes/version.ts

@@ -0,0 +1,8 @@
+import { FastifyInstance } from 'fastify';
+
+export default async function versionRoute(fastify: FastifyInstance) {
+  fastify.get('/version', async () => ({
+    version: '0.0.1',
+    commit: process.env.COMMIT_SHA || 'dev',
+  }));
+}