feat: obtain Java and Python artifacts from .m2 or Python virtual environment from input (WIP)

[tromai]

Closes #811

• [x] Add --local-maven-repo as CLI option
• [x] Handle mounting .m2 depending on user provided --local-maven-repo into the container.
• [x] Add integration tests for invalid usages of --local-maven-repo
• [x] Add unit tests for run_macaron.sh adding --local-maven-repo behavior
• [x] Fix and issue with dumps-defaults command not being handled in run_macaron.sh
• [ ] Add tests on whether the correct .m2 is mounted into the container.
• [x] Obtain directories and files corresponding to a Python software component from virtual environment.
  • [x] Add unit tests.
  • [ ] Integration test (?)
• [ ] Obtain directories and files corresponding to a Java software component from the cached .m2.
  • [x] Add unit tests.
  • [ ] Integration test (?)
• [ ] Clean up and add tutorial