Add support for mocking methods in modules

[gregbell26]

Python caches all sys imports for some cute reason on macos and linux. How cute!

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 95.23810% with 13 lines in your changes are missing coverage. Please review.

Project coverage is 94.86%. Comparing base (a3f7e4b) to head (8744b49). Report is 2 commits behind head on main.

Files	Patch %	Lines
...bmissionImpl/Python/AbstractPythonImportFactory.py	62.50%	3 Missing :warning:
.../StudentSubmissionImpl/Python/PythonEnvironment.py	94.82%	3 Missing :warning:
...urce/StudentSubmissionImpl/Python/PythonRunners.py	89.28%	3 Missing :warning:
...ntSubmissionImpl/Python/PythonSubmissionProcess.py	90.32%	3 Missing :warning:
...urce/StudentSubmissionImpl/C/CSubmissionProcess.py	88.88%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #79 +/- ## ========================================== - Coverage 95.09% 94.86% -0.24% ========================================== Files 27 31 +4 Lines 1346 1577 +231 ========================================== + Hits 1280 1496 +216 - Misses 66 81 +15 ```

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