chore(dev-ex): add open api spec

[jatinsandilya]

Description

Adds an auto generated open-api spec from fern for developers who would prefer that instead.

Type of change

• [x] Internal

How Has This Been Tested?

No testing is required for this.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code

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Name	Status	Preview	Comments	Updated (UTC)
revert-client	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 4, 2024 6:08am

[github-actions[bot]]

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