Integrate native Gravatar Quick Editor to change avatar.

[etoledom]

This PR is a demonstration of integrating the native Gravatar Quick Editor, replacing the web-view interface.

The secrets can be the same than used on the Gravatar Demo app. Or create new ones using the Gravatar devs panel

To test

Checklist

• [ ] I have considered if this change warrants user-facing release notes and have added them to CHANGELOG.md if necessary.
• [ ] I have considered adding unit tests for my changes.
• [ ] I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.