feat(upgrade): update-carbon-icons-react-import-to-carbon-react codemod

[tay1orjones]

This introduces a new codemod that will automatically convert imports from @carbon/icons-react to @carbon/react/icons.

This spawned from #14014 w/ @sstrubberg

Changelog

New

• Added update-carbon-icons-react-import-to-carbon-react codemod and associated tests and test fixtures.

Changed

• Updated v11.md to list this codemod and reorganize some of the content so that it's clear you need to run this one after the icon size prop codemod

Testing / Reviewing

• Ensure the input/output test fixtures make sense - input is what someones code should look like before running the codemod, and the output is what we expect the codemod to generate/change it to.
• Make sure the docs read well and I didn't miss anything

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[sstrubberg]

Docs look good

[tw15egan]

LGTM 👍 ✅