feat: add experience composer and captions to video

[dragonmantank]

Description

Adds in the Experience Composer and Captions API calls to the Video SDK

Motivation and Context

These are ready for testing for integration

Testing Details

Unit tests

Example Output or Screenshots (if appropriate)

Types of changes

• 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)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[manchuck]

Looks good! It just needs bucket files.

https://www.npmjs.com/package/create-index works nicely (or I can walk you through the vim macro)

[manchuck]