Set Embedding and Model to Default on the server

[doggi87]

I can't see this feature but would be really good to have a default button to use only one model and embedding you can set in a config.

Something like this to have as default.

chatModelProvider = Ollama
embeddingModelProvider = Ollama

chatModel = llama3.1
embeddingModel = nomic-embed-text

[GENERAL]
PORT = 3001 # Port to run the server on
SIMILARITY_MEASURE = "cosine" # "cosine" or "dot"
KEEP_ALIVE = "5m" # How long to keep Ollama models loaded into memory. (Instead of using -1 use "-1m")
STANDARD MODEL =
STANDARD EMBEDDING MODEL =