ML Pipeline v2

[mihow]

• Update API schema to match latest features to support the new self-service ML Pipeline registry in Antenna
• New /info endpoint that returns available Algorithms and Pipelines, and the server status
• Support for serving Category Maps, aka labels or classes for the classification models (also provided via the /info endpoint and with each batch of classification results, but not with every single detection)
• Return all raw logits from the model prediction with each detection classification response
• Return all softmax scores from the model prediction with each detection classification response
• Some updates to Pydantic syntax for v2
• Add tests for the API and workflow for running them in Github

This will be deployed with the corresponding Antenna PR in RolnickLab/antenna#684