Build a Dagster resource that wraps an external API client with per-environment configuration using ConfigurableResource

Steps

1. Subclass ConfigurableResource and declare fields as class attributes with Pydantic types (e.g., api_url: str, api_key: str = EnvVar('MY_API_KEY'))
2. Implement a create_client method or property that instantiates the API client using self.api_url and self.api_key, enabling lazy initialization
3. Reference the resource in assets or ops using the ResourceParam[MyResource] type annotation in the function signature; Dagster injects the resource automatically
4. Define environment-specific configurations in Definitions by passing different MyResource instances to the resources dict keyed by resource name
5. Use IAttachDifferentObjectToOpContext if the resource wraps a client that cannot be serialized; override get_object_to_set_on_execution_context to return a lightweight wrapper