Add an option to DevTools to enable double-logging

[gaearon]

We currently plan to suppress double-logging in development by overriding console in 17: #18547

However this can be confusing for some scenarios and double logging may be preferable in them.

Ideally we'd add a toggle to DevTools that would allow to re-enable it on this screen:

[Jchinonso]

I could take this up!

[gaearon]

Sounds good.

[Jchinonso]

@gaearon i need more light on how to go about this. I have created the UI already #19710 but pretty confused on how to get the boolean value in packages/shared/ConsolePatchingDev.js. Or am i to do the manipulation here https://github.com/facebook/react/blob/master/packages/react-devtools-shared/src/backend/console.js

[todortotev]

@Jchinonso Are you working on the PR? If you are busy do you mind if I take it up?

[Jchinonso]

@todortotev PR is up already #19710

[todortotev]

@todortotev PR is up already #19710

Apologies! My bad! Good work!

[Jchinonso]

@todortotev PR is up already #19710

Apologies! My bad! Good work!

No worries

[stale]

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