Improves the Keybinding parsing logic

[brunoorsolon]

Description

Adds an extra parsing to the Keybindings script, making some of the keys more readable and allowing "mod only" shortcuts to be properly represented/

Changes

• Improved
• Bug Fixes
• Feature
• Documentation
• Other

Context

I use SUPER alone as the Keybind to open the app launcher in my local system.
To achieve that, you need to declare it like this:
bindr = $mainMod, $mainMod_L, exec, $HYPRSCRIPTS/launcher.sh # Open application launcher

This breaks the original keybindings window script as it can't parse "bindr" and even if it could, it would result in SUPER + SUPER_L as the "key"

The improved version handles those cases and also makes some of the keys more human readable (like common FN keys that are currently named XF86_*)

How Has This Been Tested?

• Tested on Arch Linux/Based Distro.
• Tested on Fedora Linux/Based Distro.
• Tested on openSuse.

Checklist

Please ensure your pull request meets the following requirements:

• My code follows the style guidelines of this project.
• I have performed a self-review of my code.
• I have commented on my code, particularly in hard-to-understand areas.
• My changes do not introduce new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• I have made corresponding changes to the documentation
• New and existing unit tests pass locally with my changes.

Screenshots

Related Issues

N/A

Additional Notes

hyprwm/Hyprland#2506