Implemented server routes

pages/api/submit.ts

@@ -1,12 +1,14 @@
-import {NextApiHandler} from "next";
 import {GroupData, setGroups} from "../../src/database/groups";
+import {nextHandler} from "../../src/utils/errors";
+import {waitForInitSchemas} from "../../src/validation/schemas";
 
-const handler: NextApiHandler = async (req, res) => {
+const handler = nextHandler(async (req, res) => {
   if (req.method !== 'POST') throw new Error('Invalid method')
+  await waitForInitSchemas.resolve()
   const data = req.body as GroupData
 
   const uuid = await setGroups(data)
   res.json({ uuid })
-}
+})
 
 export default handler