feat(jest-config-carbon): update transform ignore, add watch plugins

[joshblack]

This PR updates our jest-config-carbon package in a couple of ways:

• Files in es, lib, or umd are no longer transformed, these paths have been added to the transformIgnorePatterns options
• Watch plugins have been added to make it easier to find files

The first update reduced the overall test time by ~27% on my machine (down to ~180s), the second is a QOL change for watch mode.

Changelog

New

• Add jest.config.js for the default test config
• Add jest.e2e.config.js for the e2e test config

Changed

• Update the default jest config to exclude transforming es/lib/umd files (like icons)
• Add watch plugins to Jest config

Removed

Testing / Reviewing

• Verify tests pass as expected, both unit and e2e
• Try out the watch plugins locally if you want! Just run yarn test --watch and filter by filename or test name to see the suggestions pop up

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[netlify]

✔️ Deploy Preview for carbon-components-react ready!
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🔨 Explore the source changes: e3d0a21

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[tw15egan]

LGTM 👍 ✅