added react-native-activity-kit

[efstathiosntonas]

📝 Why & how

✅ Checklist

• Added library to react-native-libraries.json
• Updated library in react-native-libraries.json

• Documented in this PR how to use the feature or replicate the bug.
• Documented in this PR how you fixed or created the feature.

[efstathiosntonas]

@Simek hi, what to do in this case?

Package name extracted from 'package.json' at given GitHub repository URL differs with package name in the directory data!
- Supplied package name: @kingstinct/react-native-activity-kit
- Extracted package name: react-native-activity-kit-mono

[Simek]

Thank you for the update! 👍