Add JIL FileType

[fritz-astronomer]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 82.02%. Comparing base (b3ee237) to head (ecef6a2).
Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
orbiter/file_types.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #35      +/-   ##
==========================================
+ Coverage   78.92%   82.02%   +3.09%     
==========================================
  Files          35       35              
  Lines        1362     1435      +73     
==========================================
+ Hits         1075     1177     +102     
+ Misses        287      258      -29     

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