Enable prefer type-only imports

[raulsanchez1024]

This PR really doesn't fit under any of the categories available. Sorry if this kind of PR is not accepted, I will close if it's not.

This PR enables prefer type-only imports eslint rule. I noticed that redux-toolkit has this rule enabled so I thought it'd be good to port it over redux as well.

Related to issue: https://github.com/reduxjs/redux/issues/4382

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[raulsanchez1024]

@markerikson - I forgot about this PR. Should be good to merge now

[EskiMojo14]

thanks!