feat: add filename sorting

[Computerdores]

Summary

• Adds sorting by filename in order to close [Feature Request]: Sort by Filename #822 and address the roadmap item.
• Adds sorting by path.
• Changes the DB Schema and bumps the DB Version to 9.

Note: The failing test is due to an issue that is present on main and has gone unnoticed until now. I have added the missing assertion so it should be easy to fix in a separate PR.

Tasks Completed

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

[Computerdores]

this is now ready for review

[CyanVoxel]

I apologize for the inconvenience, #844 has now been pulled and a rebase targeting main will be required here now.
Thank you for your work on this so far, and sorry again for the disruption!

[Computerdores]

rebase is done. I have also fixed the search test by updating the search library to the latest db version. Further I have added a db migration test for the new migration

[CyanVoxel]

Everything looks good here, the only rough spot I've run into is that it can take some time for the new filename column to populate when opening a library (45 seconds for 200k files on an SSD for me).

It may be a good idea (in a future PR if antyhing) to reformat the SQL to SQL migration logic in a way similar to how the JSON to SQL logic checks in with the frontend first before migrating, just to allow for something like an indefinite progress bar popup notifying the user that things are still happening. Though this process also took place during the splash screen for me since I used the launch flags, so maybe there's even more than needs to be considered first.

In any case, thank you so much for your work on adding this! And thank you for updating the test files as well!