Add support for ConsisID

[963658029]

Model/Pipeline/Scheduler description

I have found a awesome work ConsisID, a tuning-free DiT-based controllable IPT2V model to keep human-identity consistent in the generated video. Can diffuser support it, so that I can simply use this model, thanks

Open source status

• The model implementation is available.
• The model weights are available (Only relevant if addition is not a scheduler).

Provide useful links for the implementation

https://github.com/PKU-YuanGroup/ConsisID

Demo Video

[a-r-r-o-w]

Marking as closed since ConsisID is now supported