add pipeline for 3.10 tests

[lionsardesai]

Currently while py 3.10 is released, many of the major libs havent released a wheel for their libs. Which this is fine, it typically means we need to build from source which takes quite a while for libs like sklearn and pandas. And since this happens during gitlab actions, we are wasting precious minutes building libs rather than testing. This issue has been created to track build times and add support for 3.10 platform once the builds finish in a reasonable time. (Currently expecting to revisit around mid - Jan 2022)

[lionsardesai]

this has been done.