Detailed balance

[henrikjacobsenfys]

Utility function to calculate the detailed balance factor as discussed here: easyscience/dynamics#6

Includes the option to normalise by temperature. Takes various inputs and outputs a np array. I may want to later output a scipp array, but not yet.

[codecov]

Codecov Report

❌ Patch coverage is 98.50746% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 98.50%. Comparing base (3d99faa) to head (c036a97).

Files with missing lines	Patch %	Lines
src/easydynamics/utils/utils.py	98.46%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop      #52       +/-   ##
============================================
+ Coverage     0.00%   98.50%   +98.50%     
============================================
  Files            1        2        +1     
  Lines            2       67       +65     
============================================
+ Hits             0       66       +66     
+ Misses           2        1        -1     

Flag	Coverage Δ
unittests	98.50% <98.50%> (+98.50%)	⬆️

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[rozyczko]

Good idea with separating utilities from the rest of the code.
A few points added on how to improve the code.
The rest looks good!

[rozyczko]

Type checks already test the types. If we enforce those, these checks aren't necessary

[henrikjacobsenfys]

@rozyczko Just double checking, is it OK to merge? :)