Upgrade react-select dependency to version 3 for addon-knobs

[indigolain]

What I did

Upgraded react-select to version 3, to keep up with emotion's new typing.
react-select version 3 upgrade guide here

Projects using addon-knobs and emotion 10, with the new css props, might encounter the issue below and needs to upgrade the react-select dependency for addon-knobs.
emotion-js/emotion#1084

[vercel]

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[ndelangen]

Thanks @indigolain seems there are issues with the way you import ValueType:

/Users/dev/Projects/GitHub/storybook/core/addons/knobs/src/components/types/Options.tsx
  4:27  error  Unable to resolve path to module 'react-select/lib/types'  import/no-unresolved
  4:27  error  Missing file extension for "react-select/lib/types"        import/extensions

[indigolain]

@ndelangen
Thank you for the review! I think I've managed to fix the import issue for react-select.
Could you take a look at it?

[ndelangen]

Thank you for the contribution ♥️

[indigolain]

@ndelangen
I’m glad to help 👍

[ndelangen]

I invited you to the github organisation, hope to see more PRs like this 👍

[indigolain]

Thank you for the invitation ❤️

[SimenB]

Hah, I was just about to open a PR for this. Perfect timing 😀