Add French translation

[Risengan]

Hey! Here is the French translation for Keyhole 🙂

[iKenndac]

@Risengan Very nice, thank you! Did you happen to notice any text length problems in the UI with the translations?

[Risengan]

Unfortunately, I haven't been able to verify this because when I try to run the project, I get an error with accessibility permissions that I haven't been able to fix:

2026-02-21 18:26:25.912 [E] Failed to start event tap: We probably don't have accessibility permissions?
Unable to start key handler with error: missingAccessibilityPermissions
2026-02-21 18:26:25.933 [E] Failed to start event tap: We probably don't have accessibility permissions?
Unable to start key handler with error: missingAccessibilityPermissions
2026-02-21 18:26:28.800 [E] Failed to start event tap: We probably don't have accessibility permissions?
Unable to start key handler with error: missingAccessibilityPermissions

EDIT: Okay, I tried again and this time it worked! Some strings cause text length issues. I also noticed that "Music" was not translated into French. The correct translation is "Musique".