docs(react-vue): add mention of graphqlsp to the docs

[JoviDeCroock]

Description

After talking about and integrating GraphQLSP into GraphQL Hive we wanted to mention this in the documentation.

I wasn't sure where to add it, feel free to change this yourselves or ask me to do so 😅

Type of change

Please delete options that are not relevant.

• This change requires a documentation update

Screenshots/Sandbox (if appropriate/relevant):

Checklist:

• I have followed the CONTRIBUTING doc and the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

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Latest commit: ed32846

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[n1ru4l]

Should we add a screenshot to demonstrate the functionality? It could help convince people (optional though).