Add omarchy CLI (#5477)

* Add omarchy CLI

* Remove outdated or internal

* Add bash completions for command

* Add omarchy command documentation

* Add missing docs

* Correct to what's now right

* Fix tests

---------

Co-authored-by: David Heinemeier Hansson <david@hey.com>

bin/omarchy-plymouth-set

@@ -1,5 +1,9 @@
 #!/bin/bash
 
+# omarchy:summary=Set the Plymouth boot theme colors and logo
+# omarchy:args=<background-hex> <text-hex> <path-to-logo.png>
+# omarchy:requires-sudo=true
+
 # Configure the Plymouth boot theme with a custom background color, text color, and logo.
 # Stages the change in a temp dir, then commits the staged files to /usr/share and
 # rebuilds the initramfs. Also syncs the SDDM login screen (the post-logout