Release v0.0.304

Enhance documentation on schema alteration and database initialization

- Expanded the guide on altering the schema to provide a comprehensive understanding of schema changes, including practical examples and best practices for using the `CQL::AlterTable` class.
- Introduced a detailed section on database initialization, outlining various approaches for new and existing databases, emphasizing the migration-based method for flexibility and safety.
- Updated the migration documentation to reflect new features and integration with schema synchronization, ensuring clarity on the migration workflow.
- Added examples demonstrating the initialization process and migration management, enhancing the overall guidance for developers working with CQL.

These updates aim to improve the clarity and usability of the documentation, helping developers effectively manage schema changes and database initialization.