[FEAT]: Provide response types with Sorbet

[JamieMagee]

Describe the need

Currently, the return type of all methods is Sawyer::Resource. This is pretty much a hash/dictionary object of the response body.

It would be more useful to consumers of the Octokit gem to provide type safety and discoverability of the responses by creating models, similar to those provided for the TypeScript and .NET Octokit SDKs.

Using something like Sorbet would allow for strongly typed models, and can be automatically generated from GitHub OpenAPI schema using something like openapi-sorbet.

SDK Version

No response

API Version

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Relevant log output

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Code of Conduct

• I agree to follow this project's Code of Conduct

[github-actions]

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