Migrate Promise interface to Kotlin

[rshest]

Summary:

Changelog:

[Internal] -

As in the title, moving towards migrating all the interfaces in react.bridge.

Differential Revision: D57433401

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D57433401

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D57433401

[facebook-github-bot]

This pull request has been merged in facebook/react-native@de73e44569fd2932fe5683f7a392f37d866e5d35.

[react-native-bot]

This pull request was successfully merged by @rshest in de73e44569fd2932fe5683f7a392f37d866e5d35

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