Adding mu and r to virtual packet logging

[isaacgsmith]

This allows virtual packet logging to track the initial propagation direction and radius of the virtual packets.

Description

If virtual packet logging is turned on, the list of initial propagation directions and radii of the virtual packets are respectively accessible via MontecarloRunner.virt_packet_initial_mus and MontecarloRunner.virt_packet_initial_rs.

Motivation and context

This will be helpful with visualizing the virtual packets, as well as with analyzing them.

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.

[tardis-bot]

Before a pull request is accepted, it must meet the following criteria:

• Is the necessary information provided?
• Is this a duplicate PR?
  • If a new PR is clearly a duplicate, ask how this PR is different from the original PR?
  • If this PR is about to be merged, close the original PR with a link to this new PR that solved the issue.
• Does it pass existing tests and are new tests provided if required?
  • The test coverage should not decrease, and for new features should be close to 100%.
• Is the code tidy?
  • No unnecessary print lines or code comments.

[codecov]

Codecov Report

Merging #1696 (4c44695) into master (cc0410e) will decrease coverage by 0.19%.
The diff coverage is n/a.

❗ Current head 4c44695 differs from pull request most recent head e44c392. Consider uploading reports for the commit e44c392 to get more accurate results

@@            Coverage Diff             @@
##           master    #1696      +/-   ##
==========================================
- Coverage   61.29%   61.09%   -0.20%     
==========================================
  Files          63       63              
  Lines        5792     5814      +22     
==========================================
+ Hits         3550     3552       +2     
- Misses       2242     2262      +20     

Impacted Files	Coverage Δ
...dis/montecarlo/montecarlo_numba/numba_interface.py	46.15% <0.00%> (-3.48%)	⬇️
tardis/tardis/montecarlo/montecarlo_numba/base.py	25.77% <0.00%> (-2.97%)	⬇️
tardis/tardis/montecarlo/base.py	88.77% <0.00%> (+0.12%)	⬆️

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[andrewfullard]

Looks great

[Rodot-]

Looks good to me