Add DuckDB Swift

Author: gjmwoods

README.md

@@ -578,6 +578,7 @@ Please see [CONTRIBUTING](https://github.com/vsouza/awesome-ios/blob/master/.git
 - [Unrealm](https://github.com/arturdev/Unrealm) - Unrealm enables you to easily store Swift native Classes, Structs and Enums into Realm.
 - [QuickDB](https://github.com/behrad-kzm/QuickDB) - Save and Retrieve any `Codable` in JUST ONE line of code + more easy usecases.
 - [ObjectBox](https://github.com/objectbox/objectbox-swift) - ObjectBox is a superfast, light-weight object persistence framework.
+- [DuckDB](https://github.com/duckdb/duckdb-swift) - DuckDB is a high-performance analytical database system.
 
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