Add OpenAPI task implementation

[treblereel]

[Many thanks for submitting your Pull Request ❤️!

What this PR does / why we need it:
Fix #477

Special notes for reviewers:

Additional information (if needed):]

[treblereel]

I'm gonna add more tests soon

[fjtirado]

You do not need this block, you just want to propagate all exception that are not workflow (because if it workflow you want to try the next server), which will happen anyway if you delete this block

[mcruzdev]

Hi @treblereel, nice pull request!

I would like to mention the redirect option, are you planning to do in another pull request?

[mcruzdev]

To be more specific, this one https://github.com/serverlessworkflow/specification/blob/main/dsl-reference.md#properties-6 redirect

[treblereel]

@mcruzdev OpenAPI is quite a large topic, and I prefer to work on it in small iterations. It makes reviewing and testing easier

[ricardozanini]

@mcruzdev feel free to add it - I'm merging this one.

[mcruzdev]

@mcruzdev OpenAPI is quite a large topic, and I prefer to work on it in small iterations. It makes reviewing and testing easier

I agree with you.

@mcruzdev feel free to add it - I'm merging this one.

Yeah, I can work on it.

[treblereel]

@mcruzdev ping me if you have any q

[fjtirado]

@mcruzdev @treblereel Ill be heavily refactoring openAPI implementation those days because of #879, so its better to wait to add more functionality for the time being.
@mcruzdev in the meantime you can start looking to https://github.com/serverlessworkflow/specification/blob/main/dsl-reference.md#shell-process, which is a long and independent task