## Description
Adds `metadata.openapi.json` to version control. Adds a Buildkite job that verifies the spec is up-to-date on server changes, and fails the CI pipeline if not.
Adds scaffolding for a new Typescript project that consumes that OpenAPI spec, and produces Typescript types. This is adapted from the similar existing data connectors project in `dc-agents/dc-api-types/`. Generated code is *not* committed to version control. Instead there is a script to generate code on-demand at publishing time. There are plans to incorporate publishing the generated project to NPM using a forthcoming pipeline that the Console team is working on.
For the moment the Typescript project is under `metadata-api-types/typescript/`. The plan is to move the project in a future PR to the frontend sub-monorepo.
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/7525
GitOrigin-RevId: dc27a807e52af117636f3aa6c2c289a0be87ade1
