feat: Multiple network profiles for models (API)

[eckartal]

• I have searched the existing issues

Is your feature request related to a problem? Please describe it

Currently, the OpenAI model configuration only accepts one URL, but users like me often switch between multiple OpenAPI URLs depending on the use case. Manually editing the URL each time is time-consuming and inefficient.

Describe the solution

A feature that allows users to create and manage multiple network profiles for different models.

Teachability, documentation, adoption, migration strategy

No response

What is the motivation / use case for changing the behavior?

It'd be perfect for users who rely on multiple backends for different tasks.

[jens-ghc]

Linking this up to my related issue: #3214

[0xSage]

dupe of 3214, which explains better