refactor trpc routers

server/trpc/routers/app.router.ts

@@ -0,0 +1,14 @@
+import { router } from "~/server/trpc/trpc";
+import { notesRouter } from "./notes.router";
+import { authRouter } from "./auth.router";
+import { accountRouter } from "./account.router";
+
+export const appRouter = router({
+  notes: notesRouter,
+  auth: authRouter,
+  account: accountRouter,
+});
+
+// export only the type definition of the API
+// None of the actual implementation is exposed to the client
+export type AppRouter = typeof appRouter;