fix: Proposed fix for adding useWebKit support to getFromResponse/set…

[Loxrie]

Proposed fix for #72 useWebKit option on setFromResponse/getFromResponse

• Should resolve issues with getFromResponse/setFromResponse not supporting WK cookie store.
• Should not interfere with current calls to those methods by stubbing useWebKit as optional in index.js

Test Plan

setFromResponse is working for me in live code, getFromResponse is untested.

Apologies, this is a draft PR I have no test plan.

What's required for testing (prerequisites)?

An url that produces cookies for getFromResponse

What are the steps to reproduce (after prerequisites)?

Check to see if getFromResponse successfully sets cookies in WKHTTPCookieStore.

Compatibility

OS	Implemented
iOS	✅
Android	✅

Checklist

setFromResponse is tested in the wild, but getFromResponse is not, so no X in that box.
There is no CHANGELOG.md.

• I have tested this on a device and a simulator
• I added the documentation in README.md
• I mentioned this change in CHANGELOG.md
• [X ] I updated the typed files (TS and Flow)
• I added a sample use of the API in the example project (example/App.js)

[safaiyeh]

Appreciate this @Loxrie I'll check this out soon

[tdoran]

Is there any update on whether/when this might be merged in?