Feature/language flyout

[bropines]

Summary

Added the Language Flyout feature

Motivation

I just wanted the flyout to appear when the keyboard layout is changed as well.

Closes #607 #83

Type of Change

• Feature
• Bug fix
• Refactor (no functional changes)
• Style (formatting, naming)
• Other

What Changed

• Developed the Language Flyout itself
• Added to the settings
• Translated into two languages at once: Ru and En
• The system language uses the system's primary color; for other languages, the HUE offset is applied relative to the primary color.

Additional Information

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Checklist

• Code changes are manually tested and working.
• Formatting and naming are consistent with the project.
• Self-review of changes is done.

• AI tools were used (if yes, I reviewed and fully understand the changes myself).