feat(examples): with eslint flat config

[jnlsn]

Description

I recently went through the headache of upgrading to ES Lint's flat config for a project and wanted to share what I learned here. I have cloned the basic example under with-eslint-flat-config and updated configs to be as close to the basic example while using the new flat structure. I'm happy to make this change elsewhere and/or update documentation if that is preferable. Feedback appreciated; please let me know how I can help.

Related to: #7909

Testing Instructions

1. navigate to examples/with-eslint-flat-config
2. pnpm i
3. pnpm lint

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New dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher
npm/@eslint/compat@1.1.1	None	0	47.7 kB	eslintbot
npm/@eslint/eslintrc@3.1.0	filesystem, unsafe	+3	894 kB	eslintbot
npm/@eslint/js@9.9.1	None	0	14.2 kB	eslintbot
npm/@types/eslint@9.6.1	None	0	196 kB	types
npm/@typescript-eslint/eslint-plugin@8.4.0	None	+6	4.39 MB	jameshenry
npm/@typescript-eslint/parser@8.4.0	None	+4	1.4 MB	bradzacher, jameshenry
npm/eslint-config-next@14.2.7	unsafe	+5	1.38 MB	vercel-release-bot
npm/eslint@9.9.1	environment Transitive: filesystem	+8	3.6 MB	eslintbot
npm/globals@15.9.0	None	0	174 kB	sindresorhus
npm/typescript-eslint@8.4.0	None	+5	1.76 MB	jameshenry

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[dugan-dev]

Thanks @jnlsn! I was able to mirror this PR in my repo to get everything working without issue.

[anthonyshew]

Hey, @jnlsn! Would you want to port this work over to the basic example itself? That example needs to be migrated to v9 anyway, so it would be great to have one fewer example to maintain.