[Cosmos] run cosmos emulator tests during PRs

[analogrelay]

This PR adds some logic to the azure_data_cosmos CI pipeline to run tests against the Cosmos emulator. This is largely based on similar logic in the Go SDK.

To implement this, I added an AdditionalStages parameter to archetype-sdk-client.yml, again mirroring what I saw in the Go SDK, which places the steps after the default pack/test/analyzer steps but BEFORE any release steps.

We install the Windows emulator primarily because that's the logic that already exists in eng/common. There is a Linux emulator, that runs as a Docker image, but I wanted to be consistent here.

In addition, I tweaked recording::start to activate tracing even when test proxy wasn't in use. This allows us to use RUST_LOG to turn tracing on for live tests.

[analogrelay]

I see now that the PR builds aren't quite structured the same. I'm looking in to an approach using the Test-Setup.ps1 file

[heaths]

I see now that the PR builds aren't quite structured the same. I'm looking in to an approach using the Test-Setup.ps1 file

Work with @hallipr and @LarryOsterman if needed. They devised that system.

[github-actions]

Hi @analogrelay. Thank you for your interest in helping to improve the Azure SDK experience and for your contribution. We've noticed that there hasn't been recent engagement on this pull request. If this is still an active work stream, please let us know by pushing some changes or leaving a comment. Otherwise, we'll close this out in 7 days.

[analogrelay]

I'm going to go ahead and close this in the short term. I need to do some other work to figure out the right approach here.