Usage: php scripts/create-plugin.php <kebab-id> [--author="Name"]

Example:
  php scripts/create-plugin.php my-plugin --author="Jane Doe"

This clones https://github.com/ChurchCRM/community-plugin-hello-world
into a temp directory, then copies it into
src/plugins/community/<kebab-id>/, rewriting the plugin id, PHP
namespace, and main class name so the result is runnable.