Add e2e tests for Wasm OCI artifact

[jsturtevant]

This is a follow up to #631 and adds tests to test the artifact type defined at https://tag-runtime.cncf.io/wgs/wasm/deliverables/wasm-oci-artifact/

This mostly worked out of the box. A couple minor notes that will be working to resolve upstream:

• Using the containerd CRI interface works with this, containenrd CTR has a bug in it that blocks this being used.
• The pod spec also needs a command specified otherwise the pod will not start.

[jsturtevant]

smoke test failed with

ctr: failed to start shim: start failed: failed to create TTRPC connection: dial unix OpenTelemetry trace error occurred. error sending request for url (http://localhost:4318/v1/traces): error trying to connect: tcp connect error: Connection refused (os error 111)

[jsturtevant]

There are definitely some instability but I don't believe it is related to these changes or #631:

2 out of three pods started in the e2e (not oci artifact related):

default              wasi-demo-6c5dcf6ddb-47qjh                              2/2     Running             0          [8](https://github.com/containerd/runwasi/actions/runs/10326209465/job/28589545828?pr=661#step:8:9)2s
default              wasi-demo-6c5dcf6ddb-6qh8s                              2/2     Running             0          82s
default              wasi-demo-6c5dcf6ddb-b6trr                              0/2     ContainerCreating   0          82s

looking into the logs the pod with wasm started: default_wasi-demo-6c5dcf6ddb-b6trr_c486fffe-6491-4731-af1c-a44df3603288 but the other one seems to have errors:

Aug 09 22:07:29 containerd-wasm-control-plane containerd[210]: time="2024-08-09T22:07:29.871600750Z" level=error msg="collecting metrics for e1788b4f7ae9ee221c7a5196d62b05e5c50572009d750438c240215ca43a21d1" error="task is not running: invalid argument"
Aug 09 22:07:03 containerd-wasm-control-plane containerd[210]: time="2024-08-09T22:07:03.041875285Z" level=error msg="loading cgroup for 377" error="cgroups: cannot find cgroup mount destination"

[jsturtevant]

/assign @devigned

[devigned]

lgtm!