feat(api): add hello router

Author: codingcodax

packages/api/src/root.ts

@@ -1,6 +1,9 @@
+import { helloRouter } from './router/hello';
 import { createTRPCRouter } from './trpc';
 
-export const appRouter = createTRPCRouter({});
+export const appRouter = createTRPCRouter({
+  hello: helloRouter,
+});
 
 // export type definition of API
 export type AppRouter = typeof appRouter;