Add the KubeVirt ociarchive artifact to the browser

[rmohr]

Add the ociarchive from the metadata which looks somewhat like this:

    "images": {
        "ostree": {
            "path": "fedora-coreos-35.20220412.dev.0-ostree.x86_64.ociarchive",
            "sha256": "fa58a55fec683dcbf7f8c57bf06dd183258ed1e450e0c8fd978fe039bb6c0b80",
            "size": 1487249920,
            "skip-compression": true
        },
        "qemu": {
            "path": "fedora-coreos-35.20220412.dev.0-qemu.x86_64.qcow2",
            "sha256": "a554c002682b7671683fbbbb66b511abe83ca37fdd4c32414c210d4dfd1af33a",
            "size": 1619263488
        },
        "kubevirt": {
            "path": "fedora-coreos-35.20220412.dev.0-kubevirt.x86_64.ociarchive",
            "sha256": "44b634f448f67c27c749767e7c0b501cca0272993441e051890194cda2b006a2",
            "size": 854137344
        }
    },

and add it to the browser.

xref coreos/fedora-coreos-tracker#1126

[jlebon]

Thanks!