[META] Create Transport APIs for the dependencies of OpenSearch for creating detector

[owaiskazi19]

Is your feature request related to a problem?

Create Transport Request/Response for the below and check if they are accessible in SDK

1. ClusterService
2. NamedXContentRegistry - XContentRegistry not used in createDetector
3. ActionListener

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[saratvemulapalli]

Based on the work done in #20 I've added the extension points to support.