Enhanced QoS statistics and volume control API updates

Tags: bug-fix, deprecation, sdk-version | Enhanced Quality of Service (QoS) statistics with a new comprehensive data structure that aligns with the Video SDK for web, providing detailed metrics for audio and video performance including codec information, network levels, jitter, packet loss, and encoding/decoding statistics. Adds new playback volume control methods with improved naming conventions while deprecating the older volume control APIs. Resolves a critical build issue affecting iOS simulator compatibility.