Refactor WebRenderer to use server-side streaming with OGG-FLAC sink

This commit refactors the WebRenderer to use a server-side streaming architecture with OGG-FLAC sink instead of the previous WebSocket-based approach. The changes include:

- Replaced WebSocket communication with HTTP streaming using DirectOggFlacSink
- Implemented a new pipeline architecture with dedicated handlers for UPnP commands
- Added new modules for registration, registry, and streaming
- Updated the renderer to work with a pipeline control system
- Removed old WebSocket session management
- Added support for HTTP streaming with gapless playback
- Updated dependencies and features for the new architecture

The WebRenderer now acts as a MediaRenderer UPnP device that serves audio streams via HTTP endpoints, with commands relayed to the audio pipeline through a new control system.

Cargo.lock

@@ -3863,6 +3863,7 @@ version = "0.1.0"
 dependencies = [
  "async-trait",
  "bytes",
+ "futures",
  "pmoaudio",
  "pmoaudiocache",
  "pmocache",
@@ -3871,6 +3872,7 @@ dependencies = [
  "pmometadata",
  "pmoplaylist",
  "rand 0.8.5",
+ "reqwest",
  "serde",
  "serde_json",
  "tokio",
@@ -4359,19 +4361,26 @@ dependencies = [
  "async-trait",
  "axum 0.8.7",
  "axum-extra",
+ "bytes",
  "futures",
  "parking_lot",
+ "pmoaudio",
+ "pmoaudio-ext",
  "pmoconfig",
  "pmocontrol",
  "pmodidl",
+ "pmoflac",
  "pmomediarenderer",
+ "pmometadata",
  "pmoserver",
  "pmoupnp",
  "pmoutils",
+ "reqwest",
  "serde",
  "serde_json",
  "thiserror 2.0.17",
  "tokio",
+ "tokio-util",
  "tower-http",
  "tracing",
  "uuid",