Add react-native-nitro-notification to the directory

[Pnlvfx]

📝 Why & how

This PR adds react-native-nitro-notification (https://github.com/Pnlvfx/react-native-nitro-notification) package to the directory.

Note

This is an automatic submission created via rn-directory CLI.

✅ Checklist

• Added library to react-native-libraries.json

[Simek]

Hello @Pnlvfx, thanks for adding a new package! 👍

Like in previous entry case, I have added an example and removed the out-of-tree platforms. Feel free to modify entry in the future.