Integrate with groqd to do runtime validation

[drevantonder]

Hey!

Love this project and appreciate that someone has taken the time to provide it to the community!

I like how this project reduces the need to specify your schema twice (once as a sanity schema and once as a Typescript schema), but would like the runtime validation groqd provides: https://formidable.com/open-source/groqd/

My idea is to add the abilty to return a groqd query and schema by this library to use when fetching from sanity.

This would then mean:

1. You can have full confidence in the data returned by sanity and avoid weird runtime errors
2. Continue to define your schema in a single location and have Typescript intellisense

I'd be happy to work on such an integration and submit a pull request if this is something that you'd like added to this library!