SFDX enable Asset Sharing Scratch org

How can we enable Asset Sharing as we create a scratch org?

The only way I know to enable it is by switching to classic and navigating to it on the Setup menu. I would like to script this or define it in the project-scratch-def.json so I can spin up a scratch org as a pre-commit hook.

"sharingSettings": {
    "enableAssetSharing": true
}