chore: keep only the canonical OpenAPI document for 2.0.x and latest

[ChiragAgg5k]

Summary

open-api3-2.0.x.json and open-api3-latest.json (#105, #106) cover client, server and console in one document; each operation, alias and security scheme lists its platforms under x-appwrite.platforms, and x-appwrite.auth is keyed by platform. The three per-platform files in those two folders were exact subsets of it and are removed. Versions up to 1.9.x keep their per-platform files. README updated.

Consumers

• sdk-generator selects the platform from the canonical document since 4.8.0 and reads keyed auth since 4.9.0; chore: generate examples from the canonical OpenAPI document sdk-generator#1882 switches its example generation to the canonical URL.
• appwrite-labs/cloud's specs workflow now publishes only the canonical file (branch feat/canonical-openapi-document), so a rerun will not re-add the platform files.
• Anything else reading open-api3-2.0.x-<platform>.json or open-api3-latest-<platform>.json must switch to the canonical file and filter by x-appwrite.platforms.

Related to CLO-4377.

[greptile-apps]

Greptile Summary

This PR consolidates the 2.0.x and latest OpenAPI distributions around their canonical, multi-platform documents.

• Removes the six redundant client, server, and Console subset files.
• Documents the canonical artifact layout while retaining the older per-platform naming convention through 1.9.x.
• Updates the SDK-generation example to filter the canonical document by x-appwrite.platforms before invoking openapi-generator.

Confidence Score: 5/5

The PR appears safe to merge; the revised README example correctly limits generated SDK operations to the selected platform.

No actionable new defects or repository-rule violations remain. The prior mixed-platform generation thread was manually resolved after the README gained an explicit platform-filtering step.

Important Files Changed

Filename	Overview
README.md	Documents the canonical OpenAPI layout and now filters operations to the selected platform before SDK generation.
specs/2.0.x/open-api3-2.0.x-client.json	Removes the redundant 2.0.x client-specific subset.
specs/2.0.x/open-api3-2.0.x-console.json	Removes the redundant 2.0.x Console-specific subset.
specs/2.0.x/open-api3-2.0.x-server.json	Removes the redundant 2.0.x server-specific subset.
specs/latest/open-api3-latest-client.json	Removes the redundant latest client-specific subset.
specs/latest/open-api3-latest-console.json	Removes the redundant latest Console-specific subset.
specs/latest/open-api3-latest-server.json	Removes the redundant latest server-specific subset.

_{Reviews (2): Last reviewed commit: "docs: filter the canonical document by p..." | Re-trigger Greptile}

[ChiragAgg5k]

Added a jq step to the README example that keeps only the operations whose x-appwrite.platforms include the chosen platform before running openapi-generator; verified it yields the 783 server operations from the canonical document.

@greptile review