Enable Destination Acceptance Tests cross-language support

[sherifnada]

Subtasks:

• Create a runner which launches DAT in a Docker image with external configuration
  • define external configuration model and how user can configure it
• Create python superclass to implement necessary DAT methods
• Implement DAT for KVDB
• Create boilerplate Dockerfile for running Python subclass implementation
• Create a shell runner script to run DAT from non-java connectors (similar to acceptance-test-docker.sh for SAT)
• Edit python destination template to use new DAT by default
• Save breadcrumbs to tmp location for debugging
• Autogenerate reference docs for the test cases + input user configuration

[ad-m]

@sherifnada Can you confirm that this issue is still relevant? I wonder how to handle the @marcosmarxm request for acceptance testing of destination connector in #7231.

[sherifnada]

@ad-m yup, still relevant. Currently the only available option is to write acceptance tests in java