[Feature Request] Implementation of a native models API endpoint

[dschiese]

Problem / Observation: Currently, it doesn't seem that HAWKI provides a native API to retrieve all configured models, given the documentation (https://docs.hawki.info/architecture/HAWKI_API#available-models). Thus, keeping track of them outside the Web UI is pretty hard.

Suggestion: If the current state (no endpoint like this) isn't intended, I suggest implementing a standardized API endpoint, for example GET /models (or GET /api/v1/models), that returns a JSON list of all currently active/configured models for the specific HAWKI instance. This would not only solve the problem of tracking the available models, but also positively impact

1. Dynamic UI: External frontends can automatically populate model selection dropdowns.
2. Consistency: Aligns HAWKI with industry standards (like OpenAI's /models or Ollama's /api/tags).