Implement WASI Controller List

[GeorgeMac]

Supports #2

This issue tracks implementing the List function for the WASM/WASI Controller.

The role of this function is to list multiple instances of a resources by namespace and optional label key/pairs.

The controller needs to:

1. Build a wazero execution environment with the target FSConfig mounted at /
2. Invoke the wasm binary with the arguments ["list", kind, namespace, ...(k/v pairs)]
3. Parse the response as a []*cup.Resource and return them

func (*Controller) List(context.Context, *ListRequest) ([]*cup.Resource, error) { /**/ }

Success

The Controler can list and filter multiple resources for a given namespace