React mobile application Customization

I am using "Chatwoot" an open source messaging platform, and it is pre-build mobile application package made with React Native
"package can be found here 'https://github.com/chatwoot/chatwoot-mobile-app'".

I want to add some features to the mobile application to support some additional features that I need

features are :
- support sending voice and files messages and make sure they show correctly in chat
- support viewing incoming Location and contact messages
- App branding (changing logos..etc)