Restructuring r_packet.py

[andrewfullard]

Description

r_packet has been broken into additional files utils (containing utility functions, currently just the MonteCarloException class and get_random_mu), estimators (all estimator set/update), opacities (currently just tau electron), calculate_distances (all distance calls), frame_transformations (any doppler shifts or changes between frames)

Motivation and context

We need to clean up the r packet loops so that we can use the Monte Carlo framework for multiple different applications

How has this been tested?

• Testing pipeline.
• Other.

Examples

Type of change

• Bug fix.
• New feature.
• Breaking change.
• None of the above.

Checklist

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • (optional) I have built the documentation on my fork following the instructions.
• I have assigned and requested two reviewers for this pull request.

[codecov]

Codecov Report

Merging #1543 (cfc6052) into master (888575d) will increase coverage by 0.18%.
The diff coverage is n/a.

❗ Current head cfc6052 differs from pull request most recent head f9c2645. Consider uploading reports for the commit f9c2645 to get more accurate results

@@            Coverage Diff             @@
##           master    #1543      +/-   ##
==========================================
+ Coverage   69.06%   69.24%   +0.18%     
==========================================
  Files          68       73       +5     
  Lines        6106     6143      +37     
==========================================
+ Hits         4217     4254      +37     
  Misses       1889     1889              

Impacted Files	Coverage Δ
...dis/tardis/montecarlo/montecarlo_numba/r_packet.py	27.64% <0.00%> (-3.34%)	⬇️
...s/montecarlo/montecarlo_numba/tests/test_packet.py	100.00% <0.00%> (ø)
.../montecarlo/montecarlo_numba/tests/test_vpacket.py	100.00% <0.00%> (ø)
...s/tardis/montecarlo/montecarlo_numba/estimators.py	52.63% <0.00%> (ø)
...ntecarlo/montecarlo_numba/frame_transformations.py	48.00% <0.00%> (ø)
...is/tardis/montecarlo/montecarlo_numba/opacities.py	83.33% <0.00%> (ø)
tardis/tardis/montecarlo/montecarlo_numba/utils.py	87.50% <0.00%> (ø)
...montecarlo/montecarlo_numba/calculate_distances.py	30.23% <0.00%> (ø)
tardis/tardis/montecarlo/montecarlo_numba/base.py	30.48% <0.00%> (+0.85%)	⬆️
.../montecarlo/montecarlo_numba/single_packet_loop.py	30.64% <0.00%> (+2.31%)	⬆️
... and 2 more

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