hyprbars: add bar_color & title_color windowrules

[Misterio77]

Fixes #72

Adds two windowrules, for setting bg and fg color.

Some cool use cases:

• When interacting with remote hosts (e.g. SSH, waypipe), make the bar match the host's colorscheme (my personal one)
• Make sudo tint the bar red (like gnome's)
• Get a different color when visiting your favorite site
• Tint focused windows (Hyprbars: Allow for a different bar and text color for the focused window  #72)

recording.mp4

windowrulev2=plugin:hyprbars:bar_color 0xdd1e1010, title:^\[pleione\]
windowrulev2=plugin:hyprbars:title_color 0xeef8dcdc, title:^\[pleione\]
windowrulev2=bordercolor 0xaaf6adfe 0xaa473535, title:^\[pleione\]

windowrulev2=plugin:hyprbars:bar_color 0xdde36f6f, title:sudo
windowrulev2=plugin:hyprbars:title_color 0xeeeeeeee, title:sudo
windowrulev2=plugin:hyprbars:bar_color 0xdde36f6f, title:root@
windowrulev2=plugin:hyprbars:title_color 0xeeeeeeee, title:root@

windowrulev2=plugin:hyprbars:bar_color 0xee651b96, title:Gabriel Fontes
windowrulev2=plugin:hyprbars:title_color 0xeeeeeeee, title:Gabriel Fontes

I tried my best to make it consistent with surrounding code. I've refactored nobar so that hyprbars windowrules are applied similarly to hyprland's (i.e. with a dedicated applyRule(SWindowRule) function). Please let me know if there's anything that can be improved!

[vaxerski]

lgtm but needs a clang-format

[Misterio77]

Hey, sorry for the delay. Just formatted it.

[vaxerski]

thanks!