feat(loadConfig): allow to pass a meta data

[hasnum-stack]

Summary

Allow to pass a meta data to defineConfig function:

await loadConfig({
  meta: {},
});

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[CLAassistant]

All committers have signed the CLA.

[chenjiahan]

I have renamed this param to meta to be more semantically.

[chenjiahan]

Hi, can you sign the CLA so we can merge this PR

[hasnum-stack]

Hi, can you sign the CLA so we can merge this PR

👌🏻