Add React Native/Expo support in docs

[firasrg]

Hello! I'm mobile developer, I use Expo to build mobile apps.

I'd like to thank you for the msw/native which help us mock APIs in our apps! Now we'd like to see it in your docs. So it becomes more appreciate by community, users and visitors.

I have already, built a cool example and saved it on a Github repo called "expo-msw", as an initiative.

So what do you think? I can even do that by myself then submit a PR.

Just want to know what is your answer?

thanks