feat: add openai compatible path

Author: tikikun

controllers/llamaCPP.h

@@ -2127,6 +2127,10 @@ class llamaCPP : public drogon::HttpController<llamaCPP> {
   METHOD_ADD(llamaCPP::unloadModel, "unloadmodel", Get);
   METHOD_ADD(llamaCPP::modelStatus, "modelstatus", Get);
 
+  // Openai compatible path
+  ADD_METHOD_TO(llamaCPP::chatCompletion, "/v1/chat/completions", Post);
+  ADD_METHOD_TO(llamaCPP::embedding, "/v1/embeddings", Post);
+
   // PATH_ADD("/llama/chat_completion", Post);
   METHOD_LIST_END
   void chatCompletion(const HttpRequestPtr &req,