ZO: Change meta file generation to be split up

[priolette]

Describe your changes

Instead of using one big meta.ts file, now every character, disc, wengine and common sheets have separate folders with buffs.ts, conditionals.ts and formulas.ts files.

Issue or discord link

Testing/validation

Checklist before requesting a review (leave this PR as draft if any part of this list is not done.)

• I have commented my code in hard-to understand areas.
• I have made corresponding changes to README or wiki.
• For front-end changes, I have updated the corresponding English translations.
• I have run yarn run mini-ci locally to validate format and lint.
• If I have added a new library or app, I have updated the deployment scripts to ignore changes as needed

[coderabbitai]

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch priolette/meta-split

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[github-actions]

[zzz-frontend] [Sat Oct 18 10:02:42 UTC 2025] - Deployed d92b3a6 to https://genshin-optimizer-prs.github.io/pr/3086/zzz-frontend (Takes 3-5 minutes after this completes to be available)

[zzz-frontend] [Tue Oct 21 16:50:56 UTC 2025] - Deployed ee69a47 to https://genshin-optimizer-prs.github.io/pr/3086/zzz-frontend (Takes 3-5 minutes after this completes to be available)

[Tue Oct 21 17:55:11 UTC 2025] - Deleted deployment

[nguyentvan7]

One addl comment

[nguyentvan7]

Leave a comment for what should be in commonSheets vs just going directly into sheets arr