refactor: switch to tsclientlib for TeamSpeak protocol

- Replace custom Session/SessionHandle with tsclientlib SyncConnection
- SyncConnection runs in background task, forwards events via mpsc
- iced subscription reads events from mpsc channel
- SendChannelMessage sends via SyncConnectionHandle::with_connection
- Disconnect sends DisconnectOptions via handle
- State refresh reads data::Connection (clients, channels, server)
- Keep tscore QueryClient for ServerQuery panel
- Add tsclientlib as path dependency (from refercence/)
- CI checkout with submodules: recursive for tsdeclarations
- 69 tests passing, clippy clean

src/iced-app/Cargo.toml

@@ -12,6 +12,7 @@ path = "src/main.rs"
 [dependencies]
 iced = { version = "0.13", features = ["tokio", "debug"] }
 tokio = { workspace = true }
+futures = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 tracing = { workspace = true }
@@ -20,8 +21,9 @@ chrono = { workspace = true }
 
 shared = { workspace = true }
 tscore = { workspace = true }
-tsaudio = { workspace = true }
 tsdb = { workspace = true }
+tsclientlib = { workspace = true }
+tsproto-packets = { workspace = true }
 
 [features]
 default = []