feat(core): add support for temporalio moduleFeature/implement temporal support

[bgener]

What is the new container you'd like to have?

https://temporal.io/ is a durable execution platform for running reliable, long-running workflows. The module wraps the https://hub.docker.com/r/temporalio/temporal docker image using the server start-dev command, which starts a lightweight all-in-one dev server with gRPC (7233), HTTP/Web UI (8233), and a preconfigured default namespace.

Why not just use a generic container for this?

A generic container ("temporalio/temporal:1.5.1") alone is not sufficient because:

1. Command configuration: The image requires server start-dev --ip 0.0.0.0 to start the dev server and bind to all interfaces (required for Docker port mapping to work). Without --ip 0.0.0.0, the server only listens on localhost inside the container and is unreachable from the host.
2. 2Health check: The server takes time to initialize (creating the default namespace, starting the gRPC frontend, starting the Web UI). A naive port check is insufficient, the module polls GET /api/v1/namespaces on the HTTP port to confirm the server is fully ready and the default namespace exists before returning control to the test.
3. Address format: Temporal SDKs expect gRPC addresses in host:port format without a scheme prefix. The Python SDK currently warns that http://host:port is deprecated and will become an error in a future version; the .NET SDK already rejects it.

Other references

• Closes New Container: Temporal #844
• Docker image: https://hub.docker.com/r/temporalio/temporal
• Temporal docs: https://docs.temporal.io/
• .NET testcontainers module (sister PR): feat: Add Temporal module testcontainers-dotnet#1635