Support for get_capabilities api to probe included/excluded paths in the model.

[apratimmukherjee]

Feature Overview

• Issue TBD
• API to allow end-users to retrieve supported/unsupported features of the model for a specific implementation.

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Feature Details

• Redocly docs for this feature/branch

• New API under capabilities called get_capabilities

• Dev-Snappi branch reference

• Example command to fetch the dev-snappi branch:

  go get github.com/open-traffic-generator/snappi/gosnappi@capabilities  ```
  
  

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Code snippets

TBD go-snippets with default / include / exclude / sub-tree examples .

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Test Specification (Optional)

• This is not for use with DUT but rather to determine capabilities of a specific open-traffic-generator compliant implementation at outlined in above description/examples.