Support single-key keyboard backlight cycling (#4672)

* Support single-key keyboard backlight cycling (like Asus F4) and add keyboard specific OSD icon

* We don't need an alias

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Co-authored-by: Ryan Latimer <ryan@example.com>
Co-authored-by: David Heinemeier Hansson <david@hey.com>

default/hypr/bindings/media.conf

@@ -10,6 +10,7 @@ bindeld = ,XF86MonBrightnessUp, Brightness up, exec, omarchy-brightness-display
 bindeld = ,XF86MonBrightnessDown, Brightness down, exec, omarchy-brightness-display 5%-
 bindeld = ,XF86KbdBrightnessUp, Keyboard brightness up, exec, omarchy-brightness-keyboard up
 bindeld = ,XF86KbdBrightnessDown, Keyboard brightness down, exec, omarchy-brightness-keyboard down
+bindld = ,XF86KbdLightOnOff, Keyboard backlight cycle, exec, omarchy-brightness-keyboard cycle
 
 # Precise 1% multimedia adjustments with Alt modifier
 bindeld = ALT, XF86AudioRaiseVolume, Volume up precise, exec, $osdclient --output-volume +1