Create a JWT authenticated graphQL mutation # 1

Описание: [Official docs with graphql-express](https://graphql.org/graphql-js/runnin...)
[graphql-express](https://www.npmjs.com/package/express...)

Section#2: Nextjs frontend

[graphql-request npm package](https://www.npmjs.com/package/graphql...)

Section#3: JWT auth

[jwt.io](https://jwt.io/)
[jasonwebtoken npm package](https://www.npmjs.com/package/jsonweb...)