[docs] Adding graphql docs

[kenjicncr]

Hi! Thanks for this!

Was playing around with the graphql api and found myself guessing the attributes.
Thought it would help our fellow devs if there's a documentation for it.

I generated a couple using grahpdoc.

https://moonsama-nft-graphql-docs.vercel.app/
https://moonsama-nft-1155-factory-docs.vercel.app/

Would be happy to generate the rest if it's useful or if it doesn't already exist <3