Add cli command to import keyboard|keymap|kbfirmware (#16668)

lib/python/qmk/cli/__init__.py

@@ -59,6 +59,9 @@ subcommands = [
     'qmk.cli.generate.rules_mk',
     'qmk.cli.generate.version_h',
     'qmk.cli.hello',
+    'qmk.cli.import.kbfirmware',
+    'qmk.cli.import.keyboard',
+    'qmk.cli.import.keymap',
     'qmk.cli.info',
     'qmk.cli.json2c',
     'qmk.cli.lint',