Support maximum current calculation with simulated pulse shape library

[tdixon97]

Some steps are needed to have this working

• implement and test the basic machinery for vector fields (first attempt here)
• test this object as a "template" in maximum_current
• possibility to split e-/holes
• non-variable grids? finer closer to p+ or n+

We should also think about whether we still use the drift time map, whether we interpolate also in phi etc, how to combine with the surface simulation etc.

[codecov]

Codecov Report

❌ Patch coverage is 74.66667% with 19 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.11%. Comparing base (1c98fe8) to head (c1f86a4).

Files with missing lines	Patch %	Lines
src/reboost/hpge/psd.py	59.45%	15 Missing ⚠️
src/reboost/hpge/utils.py	89.47%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #134      +/-   ##
==========================================
+ Coverage   69.94%   70.11%   +0.16%     
==========================================
  Files          31       31              
  Lines        2449     2503      +54     
==========================================
+ Hits         1713     1755      +42     
- Misses        736      748      +12     

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