建议增加OpenAI API的兼容性接口

[epochaudio]

如果具备与OpenAI API的兼容性，其他应用的接入将变得极其便捷。
OpenAI API的范例：
curl https://api.openai.com/v1/audio/speech
-H "Authorization: Bearer $OPENAI_API_KEY"
-H "Content-Type: application/json"
-d '{
"model": "tts-1",
"input": "The quick brown fox jumped over the lazy dog.",
"voice": "alloy"
}'
--output speech.mp3

参考文档：https://platform.openai.com/docs/api-reference/authentication