Pretty easy steps to follow:
https://github.com/react-native-community/directory#how-do-i-add-a-library
How do I add a library?
Add it to react-native-libraries.json.
Submit a PR.
Please follow this format and indentation:
{
  "githubUrl": "<THE GITHUB URL>",
  "ios": false,
  "android": false,
  "web": false,
  "expo": false,
  "windows": false,
  "examples": ["<THE URL TO REPO>"],
  "npmPkg": "<NPM PACKAGE NAME>",
  "unmaintained": false,
},```