Run PythonBridge tests as part of CI/CD

[svenvc]

Run PythonBridge tests as part of CI/CD (at least on one platform).

Add some additional testable high level functional examples.

Check out existing unit tests (PythonBridge-Tests package).

[svenvc]

unit tests in PythonBridge and PythonBridge-Pharo should now all be green

unit tests in Python3Generator require juliendelplanque/Python3Generator#6 so skip them for now

some elementary gtExamples where added to PythonBridge-Pharo feenkcom/PythonBridge@9186868

ready for integration

[svenvc]

Enabled with

8760c60

Running

https://github.com/feenkcom/PythonBridge/blob/main/scripts/run_python_examples.sh

on [ubuntu-scooby-doo] Linux (AMD64) only

Requires

https://pypi.org/project/gtoolkit_bridge/0.1.7/

Result