Add sentry serializer to RN metro config

[krystofwoldrich]

This PR adds ability to patch metro.config.js in RN project and automatically add the Sentry Metro plugin as released in https://github.com/getsentry/sentry-react-native/releases/tag/5.11.0

Example patch:

const {createSentryMetroSerializer} = require('@sentry/react-native/dist/js/tools/sentryMetroSerializer');
const config = {serializer: {customSerializer: createSentryMetroSerializer()}};

[Lms24]

LGTM from general wizard perspective! Also thanks for adding the tests - makes it much easier to understand what's going on when reviewing

[Lms24]

General comment/not relevant for this PR: AFAICT, the RN wizard is the only one that supports uninstall logic (maybe electron has it as well, not sure). I was wondering if we should consider dropping uninstall support since most of our wizard flows don't do this and it takes a considerable amount logic to work properly. WDYT?

Btw, not saying we have to do this, just a thought. I'm happy to keep it around but at the same time I think it's unlikely that we'll add it to JS or source maps wizards.

[krystofwoldrich]

I agree, it adds a bit of overhead. We could drop it in the future in favor of a doc page documenting the uninstall steps. Or we can limit it to the native parts which are in general had for JS dev to unpatch.