FastAPI FeatureFlags

Supports loading flags from JSON files, URLs, dictionaries, and environment variables, as demonstrated in the README with examples like load_conf_from_url and load_conf_from_json.

Allows enabling or disabling features on the fly with methods like enable_feature, and reloading configurations dynamically via reload_feature_flags, enabling quick adjustments without redeploys.

Unregistered flags default to false, preventing unintended feature exposure, which is explicitly highlighted in the README as a safety measure.

Includes a built-in FastAPI router with Swagger UI for non-production testing, making it easy to visualize and manage flags during development, as shown in the usage section.