Example: Added a basic example with a product call

examples/basic-example/server/api/trpc/[trpc].ts

@@ -0,0 +1,9 @@
+import { createNuxtApiHandler } from 'trpc-nuxt'
+import { appRouter } from '../../trpc/routers'
+import { createContext } from '../../trpc/context'
+
+// export API handler
+export default createNuxtApiHandler({
+  router: appRouter,
+  createContext,
+})