Run integration tests against cloud

[THardy98]

Describe the solution you'd like

We want to run integration tests against cloud on all SDKs.
Should run against ring-0.

There are basically two items of work:

1. On SDK PRs, run integration tests against cloud. This basically consists of:

• extend the test workflow environment to use envconfig package (enables running tests against arbitrary server environments)
• run the test suite using the envconfig extension, pointing to cloud instance

2. On OSS PRs, run SDK integration tests per PR ? (akin to features integration with OSS)

Additional context

Earlier detection of SDK integration failures in cloud

Per-SDK Tickets

• Go -
• Java -
• TypeScript -
• Python -
• .NET -
• Ruby -
• Rust -
• PHP -
• Temporal CLI -

[THardy98]

temporalio/sdk-typescript#2163
temporalio/sdk-dotnet#794

Reference PRs that extend test workflow environment for envconfig.