* Introduced `MetadataTargetUPC` enum for target metadata tags.
* Added `METADATA_LOOKUP_UPC` dictionary for mapping file formats to UPC tags.
* Updated `Metadata` class to include `target_upc` for dynamic UPC tag assignment.
* Enhanced `Settings` class to allow configuration of `metadata_target_upc`.
This commit refactors the codebase to improve readability and maintainability by updating enums and type annotations:
- ✨ **Replaced `StrEnum` attributes**: Removed explicit type declarations for enum values to simplify the code.
- 🛠️ **Introduced `AudioExtensionsValid` enum**: Added a new enum for valid audio file extensions.
- 🔄 **Enhanced type annotations**: Updated `FAVORITES` dictionary to include specific type hints for clarity.
- 🧹 **Updated references**: Replaced outdated `AudioExtensions` usage with the new `AudioExtensionsValid`.
These changes improve code clarity, enforce stricter typing, and enhance extensibility.
Adds functionality to handle original image dimensions (`origin`) for album cover downloads.
- ✨ Added `PxORIGIN` option to cover dimension constants.
- 🔄 Updated cover image URL logic to support original dimensions.
- 🛠️ Improved cover data handling for more flexible metadata embedding.
This enhances customization and fidelity in cover image management.
Robert Honz