Extend ordering of rb torsions written out from parmed structure

[CalCraven]

PR Summary:

This PR looks to add more sorting to the lammpswriter, such that the ordering is done similar to the angles and bonds, which are prioritized not by their position in the parmed structure, but by the indexes of their component atom_types.

PR Checklist

---

• Includes appropriate unit test(s)
• Appropriate docstring(s) are added/updated
• Code is (approximately) PEP8 compliant
• Issue(s) raised/addressed?

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (2b1f5de) 86.89% compared to head (5c5dd7f) 86.89%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1112   +/-   ##
=======================================
  Coverage   86.89%   86.89%           
=======================================
  Files          61       61           
  Lines        6317     6318    +1     
=======================================
+ Hits         5489     5490    +1     
  Misses        828      828           

Impacted Files	Coverage Δ
mbuild/formats/lammpsdata.py	92.96% <100.00%> (+0.01%)	⬆️

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[daico007]

LGTM!