add vda stream metric to iw3 desktop? VDA updated recently.

[CryptoAsc]

News from VDA git:
2025-09-12: Support streaming mode for metric depth models.

[nagadomi]

I will be away from 09-22 for about a month, so I plan to add it around November.
The addition itself can be done in a day, but since the VDA code is shared with the master branch, if it has a bug I would not be able to fix it for a month.