[Test-Proxy] Create a CI Analyze step for verifying UA header in recordings

Currently one of our preflight checklist items is to verify the User Agent header is correctly formatted.
We could add a step the Analyze pipeline to use the test recordings to verify the UA header is accurate.

[Here's an example of an incorrect header](https://github.com/Azure/azure-sdk-for-python/blob/1e6036066a7d807449f353fcdd6c565ffb7536e8/sdk/cognitivelanguage/azure-ai-language-questionanswering/tests/recordings/test_create_and_deploy_project.test_create_project.yaml#L17)

This step should probably _not_ enforce the most up-to-date package version in the UA header, or it will force recordings to be re-recorded with every new version. Which ideally would be nice, is probably not practically realistic for all SDKs.