feat: Add frequency_penalty request parameter

app/client/platforms/openai.ts

@@ -46,6 +46,7 @@ export class ChatGPTApi implements LLMApi {
       model: modelConfig.model,
       temperature: modelConfig.temperature,
       presence_penalty: modelConfig.presence_penalty,
+      frequency_penalty: modelConfig.frequency_penalty,
     };
 
     console.log("[Request] openai payload: ", requestPayload);