Remove Virtual Environment Requirement from Bazel Builds

[kylekrol]

Previously, a local virtual environment had to exit with pyyaml installed for the autocoder to run. I've removed that dependency in favor on the experimental Python rules handling of pip requirements.

This will make installing with pip install -e <path-to-psim> easier as a virtual environment won't have to be present for the install to work!

[kylekrol]

@shihaocao this means on the flight software side of things simply cloning the psim submodule and calling pip install -e lib/common/psim will now work!

[shihaocao]

bet