fix(system): enable uwsm and fix session detection to allow VM login

- Enable programs.uwsm for session management.
- Improve SDDM theme session detection logic to be case-insensitive and more robust.
- Perform a global cleanup of 'Nnomarchy' and 'org.nnomarchy' typos across all scripts and configurations.

config/nomarchy/hooks/post-update.sample

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# This hook is called after an Nnomarchy system update has been performed.
+# This hook is called after an Nomarchy system update has been performed.
 # To put it into use, remove .sample from the name.
 
 # Example: Show notification after the system has been updated.