Enable specifying reference direction for azimuthal angle in PolarAzimuthal distribution

[GuySten]

Description

Currently the reference direction for the azimutal angle in PolarAzimuthal distribution is not clear.

This PR enable specifying the direction in the python API so it is clear what is going on and what is the direction that corresponds to a specific phi

Checklist

• I have performed a self-review of my own code
• I have run clang-format (version 15) on any C++ source files (if applicable)
• I have followed the style guidelines for Python source files (if applicable)
• I have made corresponding changes to the documentation (if applicable)
• I have added tests that prove my fix is effective or that my feature works (if applicable)