Add Model metadata to 'model' field on /by-hash/ API response.

[dsully]

If one makes a request to /api/v1/models/:id, top level metadata such as name, tags, creator are returned.

When making a /api/v1/model-versions/by-hash/:hash call, the ModelVersion structure is returned with a model map that has a subset of the Models top level data:

"model": {
    "name": "DucHaitenAIart - Fantasy.ai",
    "type": "Checkpoint",
    "nsfw": true,
    "poi": false
}

It would be nice if tags (in particular), creator and the new allow* fields were added to this structure.

Thanks!