refactor: project renaming, polygon mask

Overview

This merge request introduces key changes to improve the structure and flexibility of the library:

1. Library Renaming and Reorganization: Updated the naming conventions across the library, resulting in a minor reorganization for improved clarity and consistency.
2. Enhanced PolygonMask Decomposition: The PolygonMask class has been refactored to allow better decomposition, making it easier to customize and extend for various use cases.
3. Specific Resolution over Levels: Where appropriate, resolution arguments have replaced level-based specifications.
4. Simplification of process_items, resolves #2 (closed).