[FEATURE] Add FugueSQL API to Docs

[rdmolony]

Is your feature request related to a problem? Please describe.

On the API, I guess we don't have a solution like sphinx that can parse the API and you quite literally have to check the grammar file here ... from https://github.com/fugue-project/tutorials/pull/107

Describe the solution you'd like A full FugueSQL API like docs and operators that includes TRANSFORM, CREATE etc