feat: Add LlamaFile support

Add support for LlamaFile, a new model provider that allows users to interact with models stored in LlamaFile format. This includes:

- Adding an icon for LlamaFile in the provider selection menu.
- Updating the model provider selection to include LlamaFile.
- Updating the model handling logic to properly identify and process LlamaFile models.
- Updating the API providers list to include LlamaFile.

This enables users to leverage the capabilities of LlamaFile models within the application.

src/utils/oai-api-providers.ts

@@ -4,6 +4,11 @@ export const OAI_API_PROVIDERS = [
         value: "lmstudio",
         baseUrl: "http://localhost:1234/v1"
     },
+    {
+        label: "LlamaFile",
+        value: "llamafile",
+        baseUrl: "http://127.0.0.1:8080/v1"
+    },
     {
         label: "OpenAI",
         value: "openai",