+* Added support for generic types in `SqlBackend` ([#272](https://github.com/databrickslabs/lsql/issues/272)). In this release, we've added support for using rich dataclasses, including those with optional and generic types, in the `SqlBackend` of the `StatementExecutionBackend` class. The new functionality is demonstrated in the `test_supports_complex_types` unit test, which creates a `Nested` dataclass containing various complex data types, such as nested dataclasses, `datetime` objects, `dict`, `list`, and optional fields. This enhancement is achieved by updating the `save_table` method to handle the conversion of complex dataclasses to SQL statements. To facilitate type inference, we've introduced a new `StructInference` class that converts Python dataclasses and built-in types to their corresponding SQL Data Definition Language (DDL) representations. This addition simplifies data definition and manipulation operations while maintaining type safety and compatibility with various SQL data types.
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