✨ add extracting Split and Crop to file

[ianardee]

Description

allow this sort of thing

var extractedSplit = response
        .getInference()
        .getResult()
        .getSplits()
        .get(0)
        .extractFromInputSource(inputSource)

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.