✨ add support for crop & split extractions

[sebastianMindee]

Description

• ✨ add support for crop extraction
• ✨ add support for split extraction
• 🐛 fix file saves from crop/split extractors breaking in some instances

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Requires a change to the official Guide documentation.

[ianardee]

Missing the custom class from the ticket:

// class SplitFiles extends ExtractedImage[]
splitFiles.saveAllToDisk("/path/to/output/folder", "filename-prefix");