Add COCO trained model for RKNN

[samfreund]

Description

See #2026 for the previous iteration of this PR.

This adds the RKNN model trained on the COCO dataset as one of the models shipped with PV. This model is fairly general, and has been trained to identify a number of objects, including people, animals, cars, and more. This model is meant for teams to test object detection, particularly for teams who might not have access to the game elements that our other models are trained on.

It additionally acknowledges Ultralytics for the model, and includes the AGPL copyleft license.

Meta

Merge checklist:

• Pull Request title is short, imperative summary of proposed changes
• The description documents the what and why
• If this PR changes behavior or adds a feature, user documentation is updated
• If this PR touches photon-serde, all messages have been regenerated and hashes have not changed unexpectedly
• If this PR touches configuration, this is backwards compatible with settings back to v2024.3.1
• If this PR touches pipeline settings or anything related to data exchange, the frontend typing is updated
• If this PR addresses a bug, a regression test for it is added