Added docs for Altair GraphQL Cloud

[imolorhe]

Fixes

Checks

• [ ] Ran yarn test-build
• [ ] Updated relevant documentations
• [ ] Updated matching config options in altair-static

Changes proposed in this pull request:

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 546b7bf):

https://altair-gql--pr2549-imolorhe-cloud-docs-tpizkrco.web.app

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