Clean up plotting and remove unnecessary dependencies, avoid/remove sys.append calls

[sidtalia]

• termcolor error

• scipy not found

• psutil not found

• The code does not seem to work on MacOS at the moment. It is unable to find the boost header library

• (GENERAL CODE COMMENT / NOT SPECIFIC TO BEAMNG) I see some sys.append calls in the code. I think it is better practice to have the modules installed as part of the pyproject or setup.py. Try to avoid these workarounds for importing

Originally posted by @rohanblueboybaijal in #3 (review)

[sidtalia]

Though pointed out in the BeamNG branch, it is actually a project wide issue right now.