[Gutenberg] Audio Block - Audio Player UI

[jd-alexander]

Gutenberg Mobile wordpress-mobile/gutenberg-mobile#3037
Gutenberg WordPress/gutenberg#27467

Solution

Showcases the Audio Player UI with Consolidated Media Picker for file picking.

Testing

1. Create a new post.
2. Add an Audio Block.
3. Add an audio file from the device to see upload in progress and success state.
4. Add an audio file from the device while in airplane mode to see the error state.

Success

Light Mode	Dark Mode

Uploading

Light Mode	Dark Mode

Error

Light Mode	Dark Mode

Reviewing

Only 1 reviewer is needed but anyone can review.

Submitter Checklist

• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.
• I have considered adding accessibility improvements for my changes.
• If it's feasible, I have added unit tests.

[peril-wordpress-mobile]

You can trigger optional UI/connected tests for these changes by visiting CircleCI here.

[peril-wordpress-mobile]

You can test the changes on this Pull Request by downloading the APK here.

[jd-alexander]

This PR needs to be synced with develop so that it can pass. I am going to do that now.

[jd-alexander]

Closing this PR since the ongoing editor release will include these changes for WP Android.