feat: new code structure

SOURCES/main/cmdgrp/instance/list

@@ -21,22 +21,17 @@
 
 function cmd_usage ()
 {
-	# How use it
-	# example:
-	# echo "[-h] <arg1> <arg2>"
+	echo "[<instance>...]"
 }
 
 function cmd_info ()
 {
-	# What this command do (briefly)
-	# You can use multiple lines, but one is better
-	# Example:
-	# echo "Create new instance"
+	echo "Show status of the specified server instance(s)"
 }
 
 function cmd_help ()
 {
-	# Full help on command usage
+	echo "TODO: description"
 }
 
 function cmd_main ()