Compute platform extensibility

[willtsai]

Overview of roadmap item

Radius will provide extensible support for multiple compute platforms through recipes rather than hard-coded support for each platform.

Core resource types (containers, gateways, and secretStores) will allow recipes to be registered for them, with default recipes for Kubernetes and Azure Container Instances (ACI) provided by Radius. Customers can use, modify, or remove the default recipes.

This design should enable:

• Architectural separation of Radius core logic from platform provisioning code
• Community-provided extensions to support new compute platforms without Radius code changes
• Consistent platform engineering experience across all resource types

Related issues

#53
#54

Additional context