Update react-native dependency to 0.59

[rozele]

Updates dependencies to match react-native@0.59, includes fixes to metro config, Alert module and updated reference to @react-native-community/cli

[rozele]

Still needs some work updating references to @react-native-community/cli - cc @in4margaret, in case you have some time to take a look.

[rozele]

Fixed issue with template generator, one more issue to resolve for metro in generated projects.

[matthargett]

doesn't Yoga also need to be synced?

[matthargett]

I'm tracking an upstream issue where apps for out-of-tree platforms get this error when trying to run jest tests after an upgrade to 0.59:
facebook/react-native#20460

The error is the same, but the reasons appear to be different than those mentioned in the thread.
I can reproduce when I try adding a jest test to the Playground app. @rozele @acoates-ms, can you reproduce?

[rozele]

@matthargett good point - I'll also update yoga

[ghost]

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[rozele]

@matthargett - on second thought - I'll time box the fixes to update to the latest Yoga, as every upgrade seems to result in breaking changes to layout. If it takes more than a couple hours, we'll ship 0.59 as is and add a backlog item to get Yoga updated.

[rozele]

Ugh - seemed to be an issue with enum bitfields 🙄. Disabling those fixes the layout.

[timols]

Hi @rozele, any updates on this PR? Android is requiring 64bit builds as of Aug 1 which naturally places some time pressure on this upgrade in order to maintain platform compatibility across iOS, Android and Windows.