Add support to add domains/hostnames in wopi allow list.

[JMarcosHP]

Is your feature request related to a problem? Please describe. Nextcloud setups with dynamic IP need to update the wopi allow list every time the public IP changes or need to execute external scripts to keep the list updated.

Describe the solution you'd like Using domains that point to the current public IP with ddns services like cloudflare api, duck dns, etc. Can fix this issue.

Describe alternatives you've considered Unset wopi allow list (not recommended).

Additional context This

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