Add admin path for installing quickshell configuration directories:

[hboetes]

Thanks for creating quickshell, I'm a very happy user.

I install noctalia-shell in /usr/local/share/quickshell/noctalia-shell/, because I want to share setups with other users so they don't have to maintain updates. It's done automatically with the system updates.

Since quick-shell by default does not search in /usr/share/quickshell, etc. I applied the following minimal changes to the source to enable that.

diff --git a/src/launch/command.cpp b/src/launch/command.cpp
index 94fe239..18b8b2b 100644
--- a/src/launch/command.cpp
+++ b/src/launch/command.cpp
@@ -58,6 +58,10 @@ QList<QString> configBaseDirs() {
 		dir.append("/quickshell");
 	}
 
+	// Extra admin-installed locations, searched *after* user config
+	configDirs.append("/usr/share/quickshell");
+	configDirs.append("/usr/local/share/quickshell");
+
 	return configDirs;
 }

I'll happily create a PR, if you agree with the changes.