Add Oauth Handling For Open API Datasources

[aq-ikhwa-tech]

Proposed changes

• Add handling to save auth config(from possible/available tokens) for open api datasource
• Add handling to forward/inject access token into context when sending to node service for execution
• Add custom handling to override auth mechanism if token received from api-service and then send to swagger-client for processing.

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

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• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
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• Any dependent changes have been merged and published in downstream modules

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[FalkWolsky]

Fantastic! A long awaited feature. Very important. Thank you very much for your great contribution