fix: proper compound ext support + compression ext handling

[CyanVoxel]

Summary

This PR fixes #1533 and implements #1534, while porting a bit of #1506 to implement #1505. Files with compound suffixes (currently limited to compression extensions but expandable with future registrations) will now search and display those suffixes as you'd expect as per #1533. All files with these compressed extensions will also now have the ability to render, not just archives, as these extensions are detected and routed through a new decompress function. Bunch of tests added as well.

For an example of the search changes, searching filetype:tar will now return .tar, .tar.gz, .tgz, etc., and filetype:tar.gz will be more specific and only return .tar.gz and .tgz. Searching filetype:gz will also return anything like .tar.gz or .txt.gz.

This was also done with a minimal impact to performance. On the dev branch I may add an additional column to the db to cache any compound extensions, which would further speed up search performance in this area.

Tasks Completed

• Platforms Tested:
  • Windows x86
  • Windows ARM
  • macOS x86
  • macOS ARM
  • Linux x86
  • Linux ARM
• Tested For:
  • Basic functionality
  • PyInstaller executable