[FEATURE REQUEST] purchase for react-native

[J3698]

Is your feature request related to a problem? Please describe.
The docs show that to do purchases outside of paywall in android/ios; we can use "purchase" api. In my react native app there is one instance where I do not want to use a superwall paywall, but that api isn't here.

Describe the solution you'd like
I would like that api to be exposed in react native.

Describe alternatives you've considered
I'll try to do it manually or with revenuecat. But it feels cleaner to just do everything with superwall.

Additional context
Nope