feat: API specs update for version 2.0.x

[appwrite-specifications]

This PR contains API specification updates for version 2.0.x.

[greptile-apps]

Greptile Summary

This PR updates the 2.0.x API specifications and generated GraphQL examples.

• Adds a canonical combined OpenAPI document for 2.0.x.
• Adds dedicated-database storage resize state fields.
• Moves database pricing rates from the list level onto individual specifications.
• Updates storage-autoscaling defaults and security-scheme platform metadata.

Confidence Score: 5/5

The PR appears safe to merge with no actionable contract inconsistencies identified.

The database schema changes, GraphQL examples, and platform metadata are internally consistent across the applicable 2.0.x specification artifacts.

Important Files Changed

Filename	Overview
specs/2.0.x/open-api3-2.0.x.json	Adds the canonical combined 2.0.x OpenAPI document with the updated database and platform contracts.
specs/2.0.x/open-api3-2.0.x-client.json	Adds client-platform metadata to applicable security schemes.
specs/2.0.x/open-api3-2.0.x-console.json	Updates dedicated-database models, pricing placement, autoscaling defaults, and console security-scheme metadata.
specs/2.0.x/open-api3-2.0.x-server.json	Mirrors the database contract changes and adds server-specific security-scheme metadata.
examples/2.0.x/server-graphql/examples/mongo/list-specifications.md	Updates the representative specification-list query to request pricing rates from each specification item.
examples/2.0.x/server-graphql/examples/postgresql/get.md	Updates a representative database response selection with the new storage resize fields.

_{Reviews (1): Last reviewed commit: "chore: add the canonical OpenAPI documen..." | Re-trigger Greptile}