fix interface handling with generic model

introduce a "Generic" model

This is basically an OpenAI implementation, which then can be reused by
most other providers since they usually implement a somewhat compatible
API. The API URL can be se

introduce a "Generic" model

This is basically an OpenAI implementation, which then can be reused by
most other providers since they usually implement a somewhat compatible
API. The API URL can be set manually so it should be easy to add new
unsupported providers.

show more ...

add remote component to ask questions to the bot

The endpoint allows to override model and language settings on demand.

automatic stylefixes

various refactoring and introduction of a simulate command

The new command makes it easier to run the same chat questions against
multiple models and compare the results in a spreadsheet

added Voyage AI for embeddings