feat: add Binance WebSocket price provider

Add BinanceWsProvider that connects to Binance bookTicker streams with
dynamic pair discovery, bid/ask-aware price resolution (direct, reverse,
and intermediate routing), exponential backoff reconnection, and 60s
re-sync for new tokens. Also uppercases normalize_symbol output for
exchange compatibility.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: louise-poole

Cargo.lock

@@ -135,6 +135,7 @@ num_cpus = "1.16"
 lazy_static = { version = "1.5.0", default-features = false }
 uuid = { version = "1", features = ["v4", "serde"] }
 tokio-stream = "0.1.18"
+tokio-tungstenite = { version = "0.28", features = ["native-tls"] }
 async-channel = "2.5.0"
 async-trait = "0.1"
 chrono = "0.4"

Cargo.toml

@@ -29,6 +29,7 @@ metrics.workspace = true
 typetag.workspace = true
 tycho-execution.workspace = true
 reqwest.workspace = true
+tokio-tungstenite.workspace = true
 alloy = { workspace = true, features = ["sol-types"] }
 
 [dev-dependencies]