Feature: migrate to RequestReviewAction

[JordanllHarper]

The current implementation uses SKStoreReviewController.requestReview, but this is deprecated for RequestReviewAction.

Could we consider migrating to use the RequestReviewAction API?

[britannio]

I belive this was done in the last update

[JordanllHarper]

Ah I was misled because the pub.dev page says it uses SKStoreReviewController. This probably needs to change. Happy if you want to close.

[JordanllHarper]

#159 updated docs in this PR