GH-327: Do not attempt to extract files from unknown archive types.

[ascopes]

Fixes a case where dependencies on non-archive types result in an error.

TODO

• Test case to reproduce this and prove it is fixed.
• Refactor code to use a set.
• Check if I have missed any other archive types covered by the JAR archive format.

[codecov]

Codecov Report

Attention: Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.

Project coverage is 87.50%. Comparing base (9ab25d2) to head (67ba718).
Report is 2 commits behind head on main.

Files	Patch %	Lines
...otobufmavenplugin/sources/ProtoSourceResolver.java	82.36%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #333      +/-   ##
==========================================
- Coverage   87.71%   87.50%   -0.20%     
==========================================
  Files          36       36              
  Lines        1057     1064       +7     
  Branches       75       76       +1     
==========================================
+ Hits          927      931       +4     
- Misses         98      100       +2     
- Partials       32       33       +1     

Files	Coverage Δ
...otobufmavenplugin/sources/ProtoSourceResolver.java	84.22% <82.36%> (-6.11%)	⬇️

[ascopes]

Will cover the tests separately, releasing as a bugfix for now.

[ascopes]

Fixes GH-327