CKANFile: Accept `any_of` Relations

[winsmith]

This can already be parsed:

"depends": [
    { "name": "ModuleManager" }
],

But this should also be able to be parsed:

"depends": [
    {
        "name": "ModuleManager"
    },
    { "any_of": [
        { "name": "SigmaReplacements-Heads" },
        { "name": "TextureReplacerReplaced" }
    ] }
],

related: #23