feat(providers): add GPT-4 omni

src/lib/providers.ts

@@ -34,6 +34,11 @@ export const getAvailableChatModelProviders = async () => {
           modelName: 'gpt-4-turbo',
           temperature: 0.7,
         }),
+        'GPT-4 omni': new ChatOpenAI({
+          openAIApiKey,
+          modelName: 'gpt-4o',
+          temperature: 0.7,
+        }),
       };
     } catch (err) {
       logger.error(`Error loading OpenAI models: ${err}`);