Feature: Migrate to PyJWT from python-jose

[spawn-guy]

trafficstars

based on work started in https://github.com/dorinclisu/fastapi-auth0/pull/41

with cleanup

• require and verify needed claims that are produced by Auth0
• github-workflow set up
• obsolete classes
• and Dict instead of dict for py38 support

kept the Pydantic support for both v1 and v2

[spawn-guy]

@dorinclisu will you be so kind to provide some feedback on this PR?

or, rather, shall i create a different pypi package for this?