fix!: plugin list exit code 0 when no plugins are installed (#1597)

lib/functions/plugins.bash

@@ -42,7 +42,7 @@ plugin_list_command() {
     ) | awk '{ if (NF > 1) { printf("%-28s", $1) ; $1="" }; print $0}'
   else
     display_error 'No plugins installed'
-    exit 1
+    exit 0
   fi
 }