[CLI] `list-keymaps`/`list-layouts`: Check keyboard passed in (#15204)

* [CLI] `list-keymaps`/`list-layouts`: Check keyboard passed in

* Update lib/python/qmk/cli/list/keymaps.py

Co-authored-by: Joel Challis <git@zvecr.com>

* Update lib/python/qmk/cli/list/layouts.py

Co-authored-by: Joel Challis <git@zvecr.com>

Co-authored-by: Joel Challis <git@zvecr.com>

lib/python/qmk/cli/list/keymaps.py

@@ -13,5 +13,10 @@ from qmk.keyboard import keyboard_completer, keyboard_folder
 def list_keymaps(cli):
     """List the keymaps for a specific keyboard
     """
+    if not cli.config.list_keymaps.keyboard:
+        cli.log.error('Missing required arguments: --keyboard')
+        cli.subcommands['list-keymaps'].print_help()
+        return False
+
     for name in qmk.keymap.list_keymaps(cli.config.list_keymaps.keyboard):
         print(name)

lib/python/qmk/cli/list/layouts.py

@@ -13,6 +13,11 @@ from qmk.info import info_json
 def list_layouts(cli):
     """List the layouts for a specific keyboard
     """
+    if not cli.config.list_layouts.keyboard:
+        cli.log.error('Missing required arguments: --keyboard')
+        cli.subcommands['list-layouts'].print_help()
+        return False
+
     info_data = info_json(cli.config.list_layouts.keyboard)
     for name in sorted(info_data.get('community_layouts', [])):
         print(name)