Results 3 issues of Daniel Breg

Playroom does not support React 18 dependencies. It would be greate to add this support.

I'm using last version of graphql v0.7.9 I have query "users" which should return a list of users: ![image](https://user-images.githubusercontent.com/22654219/129334764-222ace0a-1bc3-4b93-9a64-767aa863f5a3.png) QueryType: ![image](https://user-images.githubusercontent.com/22654219/129334834-3da586b2-c10d-4966-afa5-78221352e8c5.png) structs: ![image](https://user-images.githubusercontent.com/22654219/129334885-c75513c3-bd34-44d2-9b74-abd6d46198bb.png) pgsql is *sqlx.DB As you can see...

- added new scripts depends on [graphiql/README.md](https://github.com/graphql/graphiql/blob/main/packages/graphiql/README.md) - added headers for graphiql(very useful)