docs: refresh README

[ChiragAgg5k]

Refreshes the README with the rewritten getting-started guide and corrected badges, links and install steps from appwrite/sdk-generator#2077 and appwrite/appwrite#14613.

README files only. No code, version or changelog changes, so this does not need a release.

[hansi-codes]

🟢 Tier S · Ready to merge

The updated OAuth guidance addresses the previously reported documentation issues, and no actionable defects remain in these changes.

Refreshes the Unity SDK README with updated installation and getting-started instructions, AppwriteManager and direct-client examples, TablesDB serialization guidance, and current badges and links. It also documents OAuth setup across Android, iOS, and WebGL.

Latest changes: The newest commit replaces the Android AppwriteConfig callback-registration claim with an explicit manifest intent-filter setup and clarifies that same-tab WebGL OAuth is unsupported.

Verdict	New comments	Fixed	Still open
✅ Approved	0	2	0

📂 Walkthrough · 1

File	Change
README.md	Updates Android OAuth setup to require a project-specific manifest intent filter, links to that guidance, and explains that OAuth is unsupported on WebGL.

✅ Fixed since the last review · 2

• Android OAuth callback is not registered from AppwriteConfig · README.md:48
• WebGL OAuth navigation cannot resume the waiting SDK call · README.md:164

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_{Reviewed the commits since 9d9bb2b · Details · Comment @hansi-codes review to re-run, or mention @hansi-codes with a question.}

[hansi-codes]

🔵 Tier A · Looks good to merge. Summary

[hansi-codes]

🟢 Tier S · Looks good to merge. Summary