feat: GraphiQL v2

[LekoArts]

Description

New GraphiQL version is out with some nice, new features!

TODOs:

• [ ] Have "Code Exporter" working https://github.com/graphql/graphiql/pull/2758
• [x] Icon for "Refresh Data Source"
• [ ] Update docs / videos

Documentation

We need to update some internal docs like:

• https://www.gatsbyjs.com/docs/how-to/querying-data/running-queries-with-graphiql/
• Main Tutorial

External: https://github.com/graphql/graphiql/blob/main/docs/migration/graphiql-2.0.0.md

Related Issues

[ch55244]