v0.1.0 of feature_flags_toggly_sqlite

SQLite persistence backend for the Toggly Flutter SDK (feature_flags_toggly), enabling offline feature flag, variant, and JWKS caching via sqflite. Changelog excerpt: 2026-05-30 ### Added - Initial release. SqliteCacheProvider, a TogglyCacheProviderbacked by sqflite, persisting feature flags, variant definitions, and JWKS in a single table for offline restart with feature_flags_toggly.