feat(nextjs): add babel root-mode option to withNx plugin

[jaysoo]

This PR adds the babelUpwardRootMode option to withNx plugin, for use in next.config.js file. This is false by default, and users will need to opt into it if they want to maintain the monorepo behavior of loading all individual .babelrc files.

Note: We don't want the root mode behavior by default because it can lead to inconsistencies between apps and libs. If a lib needs certain babel plugins to work, then the app need specify it in its own .babelrc file.

Current Behavior

Expected Behavior

Related Issue(s)

Fixes #

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Name	Status	Preview	Comments	Updated (UTC)
nx-dev	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 29, 2023 2:02pm

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✅ Successfully ran 8 targets

• nx affected -t e2e-macos --parallel=1 --base=0d48d4d7468040cbc934cc72441f48ef095f9028 --head=c9a032b93157033e79eb8f762403faef59753a20
• nx affected --target=e2e --base=0d48d4d7468040cbc934cc72441f48ef095f9028 --head=c9a032b93157033e79eb8f762403faef59753a20 --parallel=1
• nx affected --target=build --base=0d48d4d7468040cbc934cc72441f48ef095f9028 --head=c9a032b93157033e79eb8f762403faef59753a20 --parallel=3
• nx affected --target=test --base=0d48d4d7468040cbc934cc72441f48ef095f9028 --head=c9a032b93157033e79eb8f762403faef59753a20 --parallel=1
• nx run-many -t check-imports check-commit check-lock-files depcheck check-codeowners documentation --parallel=1 --no-dte
• nx affected --target=lint --base=0d48d4d7468040cbc934cc72441f48ef095f9028 --head=c9a032b93157033e79eb8f762403faef59753a20 --parallel=3
• nx-cloud record -- nx format:check --base=0d48d4d7468040cbc934cc72441f48ef095f9028 --head=c9a032b93157033e79eb8f762403faef59753a20
• nx documentation --no-dte

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