Add Python-3.10 (build and test) (#5420) (#5579)

* Add Python-3.10 (build and test)

* Fix functional.adjust_gamma

Co-authored-by: Vasilis Vryniotis <[email protected]>
Co-authored-by: Joao Gomes <[email protected]>
(cherry picked from commit e88a554)

Author: 3 people