feature request: multiple "generic" providers

[dgdevel]

Hello again!
I am building a coding team project, and wanted to mix multiple llm and decide what is the best fitting for each role.
My problem: i am using a combo of "generic" provider (z.ai coding plan paas endpoint, mistral.ai and local llama.cpp), but I can really define only one.
If I try to add my own keys to secrets I get the following error:

Model Configuration Error:
Unknown model or provider for: mistral.codestral-latest.high. Model name parsed as 'mistral.codestral-latest'

Any chance to have multiple generic providers or as alternative, treat any unsupported key in secrets as another separate instance of generic?
Thank you!