audio_stream_player

• Added web support: playback through the Web Audio API, with the same gapless scheduling, underrun events, endOfStream() drain future and buffered-duration gauge as the mobile/desktop backends.
• Web notes: browsers only start audio after a user gesture, so make the first play() call from an input handler; sample rates are guaranteed for 8000-96000 Hz (most browsers accept more).

• Re-recorded the demo GIF with the animated wave buffer gauge, so the pub.dev screenshot matches the current example app.
• No functional changes.

• Added a demo GIF of the example app to the README and package screenshots.
• No functional changes.

• Shortened the package description to meet pub.dev's 180-character limit.
• No functional changes.

Complete rewrite. audio_stream_player is now a low-latency raw PCM streaming player for feeding audio chunks from TTS and realtime voice APIs.

• Feed Uint8List PCM chunks (s16le or f32le, mono or stereo, any sample rate) and hear them as they arrive.
• endOfStream() future that completes when the last sample has played.
• Underrun events, buffered-duration introspection, pause/resume/stop, per-player volume, multiple concurrent players.
• Platforms: Android (AudioTrack), iOS and macOS (AVAudioEngine, shared Darwin source, CocoaPods + Swift Package Manager).

The 0.0.1 URL-playback API from 2018 has been removed entirely.