fix: support ft-client help and ft-client show commands

Author: xmatthias

ft_client/freqtrade_client/ft_client.py

@@ -82,7 +82,7 @@ def print_commands():
 
 
 def main_exec(parsed: dict[str, Any]):
-    if parsed.get("show"):
+    if parsed.get("show") or parsed.get("command") in ("show", "help"):
         print_commands()
         sys.exit()