feat: support the new flat config

[aladdin-add]

the used configs/parsers/plugins supports:

• eslint-plugin-react
• eslint-plugin-vue: Support for "Flat Config" vuejs/eslint-plugin-vue#1291
• ts-eslint: ESLint Flat Config Support typescript-eslint/typescript-eslint#7694
• airbnb
• standard
• google
• xo

the difficulty is the new --config: is there an easy way to check if the shared config is flat or eslintrc?

[github-actions]

Oops! It looks like we lost track of this issue. What do we want to do here? This issue will auto-close in 7 days without an update.

[aladdin-add]

assigning to me, to avoid it being auto-closed.

[nzakas]

Now would be a good time to make this change. We should automatically create an eslint.config.js file, without the option to create eslintrc-format files. We will need to ask if the file should be ESM or CommonJS format to ensure the correct syntax is generated.

@aladdin-add do you want to handle this?

[aladdin-add]

sure, i'm willing to.

[nzakas]

Thanks!