feat: Add multiple Ollama support

Adds support for using Ollama 2 as a model provider. This includes:

- Adding Ollama 2 to the list of supported providers in the UI
- Updating the model identification logic to properly handle Ollama 2 models
- Modifying the model loading and runtime configuration to work with Ollama 2
- Implementing Ollama 2 specific functionality in the embedding and chat models

This change allows users to leverage the capabilities of Ollama 2 for both embeddings and conversational AI tasks.

src/utils/oai-api-providers.ts

@@ -1,14 +1,24 @@
 export const OAI_API_PROVIDERS = [
+    {
+        label: "Custom",
+        value: "custom",
+        baseUrl: ""
+    },
     {
         label: "LM Studio",
         value: "lmstudio",
         baseUrl: "http://localhost:1234/v1"
     },
     {
-        label: "LlamaFile",
+        label: "Llamafile",
         value: "llamafile",
         baseUrl: "http://127.0.0.1:8080/v1"
     },
+    {
+        label: "Ollama",
+        value: "ollama2",
+        baseUrl: "http://localhost:11434/v1"
+    },
     {
         label: "OpenAI",
         value: "openai",
@@ -34,9 +44,5 @@ export const OAI_API_PROVIDERS = [
         value: "openrouter",
         baseUrl: "https://openrouter.ai/api/v1"
     },
-    {
-        label: "Custom",
-        value: "custom",
-        baseUrl: ""
-    }
+   
 ]