feat: add defineConfig method

[timofei-iatsenko]

Description

It seems, having a defineConfig type helper become a community standard for cli tools and other runners.

This PR brings this function and update a documentation to use it. This function is just a type helper. Both JS and TS users could benefit from it.

I re-exported this method from @lingui/cli because @lingui/cli should be installed in every project, but @lingui/conf is an internal package and users should not have it installed.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Examples update

Fixes # (issue)

Checklist

• I have read the CONTRIBUTING and CODE_OF_CONDUCT docs
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation (if appropriate)

[vercel]

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Name	Status	Preview	Updated (UTC)
js-lingui	✅ Ready (Inspect)	Visit Preview	Nov 11, 2024 1:07pm

[github-actions]

size-limit report 📦

Path	Size
./packages/core/dist/index.mjs	3.09 KB (0%)
./packages/detect-locale/dist/index.mjs	723 B (0%)
./packages/react/dist/index.mjs	1.65 KB (0%)
./packages/remote-loader/dist/index.mjs	7.26 KB (0%)

[andrii-bodnar]

@timofei-iatsenko thank you!