chore: playground api request

src/pages/playground/apis/index.ts

@@ -0,0 +1,10 @@
+import { request } from '@umijs/max';
+
+export const CHAT_API = '/chat/completions';
+
+export async function execChatCompletions(params: any) {
+  return request(`${CHAT_API}`, {
+    method: 'POST',
+    data: params
+  });
+}