add basic nodeinfo 2.0

src/routes/well-known/nodeinfo.ts

@@ -0,0 +1,20 @@
+import { RouteOptions } from "fastify";
+
+import { BASE_URL } from "~/config.js";
+
+const route: RouteOptions = {
+  method: "GET",
+  url: "/.well-known/nodeinfo",
+  handler: async (_, res) => {
+    res.send({
+      links: [
+        {
+          href: `${BASE_URL}/nodeinfo/2.0`,
+          rel: "http://nodeinfo.diaspora.software/ns/schema/2.0",
+        },
+      ],
+    });
+  },
+};
+
+export default route;