Add RN entry to package.json

[Ethella]

trafficstars

📦 Pull Request

Create RN entry for MC

✅ Fixed Issues

• [List any fixed issues here like: Fixes #XXXX]

🚨 Test instructions

[Describe any additional context required to test the PR/feature/bug fix.]

⚠️ Don't forget to add a semver label!

• patch: Bug Fix?
• minor: New Feature?
• major: Breaking Change?
• skip-release: It's unnecessary to publish this change.

[shortcut-integration[bot]]

This pull request has been linked to Shortcut Story #54298: MC RN SDK.

[Ethella]

I decided to close this PR, as we're ideating merging connect extension to the core.