move admin api to /admin

lib/session.ts

@@ -15,3 +15,12 @@ export default function withSession(handler: Handler) {
     },
   })
 }
+
+export const isAdminSession = function (req: any, res: any) {
+  const user = req?.session.get('user')
+  if (user && user.role === 'admin') {
+    return true
+  }
+  res.status(401).end('Your are unauthorized. Best to move along...')
+  return false
+}