Description

Adds Extract feature that allows you to "extract" or remove the background from around an object by using a prompt.

https://cloudinary.com/documentation/transformation_reference#e_extract

Syntax:

// String
extract="space jellyfish"

// Array of strings
extract={{
  prompt: ['space jellyfish', 'octocat'],
}}

// Object
extract={{
  prompt: 'space jellyfish',
  multiple: true,
  mode: 'mask', 
  invert: true
}}


// Object with prompt array
extract={{
  prompt: ['space jellyfish', 'octocat'],
  mode: 'mask', 
}}

Issue Ticket Number

Fixes #168

Type of change

• 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 not work as expected)
• Fix or improve the documentation
• This change requires a documentation update

Checklist

• I have followed the contributing guidelines of this project as mentioned in CONTRIBUTING.md
• I have created an issue ticket for this PR
• I have checked to ensure there aren't other open Pull Requests for the same update/change?
• I have performed a self-review of my own code
• I have run tests locally to ensure they all pass
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes needed to the documentation