DOC: add dask-sql and fugue (#7129)
DOC: add dask-sql and fugue (#7129)

* DOC: add dask-sql and fugue

* DOC: more info on dask-sql

* Update docs/source/dataframe-sql.rst

Co-authored-by: crusaderky <9594c47c41d10b12ba12dfa02a6d512a5f2b5f67@gmail.com>

* update text

Co-authored-by: crusaderky <9594c47c41d10b12ba12dfa02a6d512a5f2b5f67@gmail.com>
jakirkham/dask,blaze/dask,dask/dask,dask/dask,blaze/dask,jakirkham/dask