Support for DuckDB 1.4 and Ducklake 0.3

What's Changed

• Update .gitignore and enhance README with FlightSQL to DuckDB mapping by @MiguelElGallo in #46
• chore: update to DuckDB 1.4.0 and release v0.0.2-beta by @MiguelElGallo in #62

Full Changelog: v0.0.1-alpha...v0.0.2-alpha

v0.0.1-alpha

All flight and flight sql methods implemented, need more testing.