Integration of dinov3, including optional train and inference scripts.

[S-Mahoney]

Description

Integration of Dinov3 wrapper into RFDETR pipeline.
Included are scripts which allow training of both v2 and v3 using rfdetr, as well as inference test scripts.

Due to the recent release of Dinov3; the weights required can be accessed by setting your HUGGINGFACE_HUB_TOKEN for private access (requires permission) or by requesting access to Dinov3 weights from Meta and cloning the Dinov3 repo locally.

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How has this change been tested, please provide a testcase or example of how you tested the change?

Tested via the training and inference scripts supplied, still allows activation and use of v2 whilst enabling user to also use v3. More training of pre-trained weights required for inference to be on par with dinov2 pretrained rfdetr.

Any specific deployment considerations

Licensing requirements need to be checked by RFDETR owners before deployment of this branch.

I have read the CLA Document and I sign the CLA.

[CLAassistant]

All committers have signed the CLA.

[S-Mahoney]

I have read the CLA Document and I sign the CLA.