support custom endpoint for openai realtime relay server.#75

lloydzhou wants to merge 2 commits intoAzure-Samples:mainAzure-Samples/aoai-realtime-audio-sdk:mainfrom

ConnectAI-E:feature/custom-endpointConnectAI-E/aoai-realtime-audio-sdk:feature/custom-endpointCopy head branch name to clipboard