fix(osx): rename classes to fix plugin

[NiklasMerz]

Platforms affected

osx

Motivation and Context

The plugin is not working with the osx platform right now.

Description

This PR changes the name of the class to the same name as the JS classname and this makes this plugin work again.

Testing

Added plugin and ran tests on mac

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[breautek]

lgtm -- but I don't have a mac to actually test these changes.