Enhance Python API to not expose bit masks

[Stuckya]

Describe the bug
The Python bindings no longer expose is_sc_active()
The sample code encourages users to call a missing method on line 105 of cp_app.py:

    if (count % 100) == 99 and cp.is_sc_active(PD_0):

Expected behavior
The ability to educate users of this library which python method to call for checking if a PD is active.

Observed behavior
Runtime error when attempting to run the sample.

Additional context
While trying to find alternatives, the following code was successful:

    if (count % 100) == 99 and bool(cp.sc_status() & 1 << PD_0):

Will open a PR to fix.

[sidcha]

Will keep this issue open to track the change: enhance the API to abstract bitmask details.

[sidcha]

This will be handled in a different approach. The idea is to promote tests/pytest/testlib into a proper python module. Closing this for now.