packaging issue: deployment of tests

[noraj]

Describe the bug

The issue is that the setup.py is deploying the tests folder under the root python path and not under this package one.

So it's end up under /usr/lib/python3.11/site-packages/tests rather than /usr/lib/python3.11/site-packages/myjwt/tests and so conflicts with other packages having the same issue.

Anyway usually test are not shipped in a release package so the easiest would just to remove them. Else they should be deployed in the children directory.

It's explained in ArchLinux packaging guidelines for Python: https://wiki.archlinux.org/title/Python_package_guidelines#Test_directory_in_site-package