add chat function

#

Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "chat-service"
+version = "0.0.1"
+edition = "2024"
+
+[dependencies]
+axum = { version = "=0.6.20", features = ["ws"] }
+tokio = { version = "=1.35.1", features = ["full"] }
+tower-http = { version = "=0.4.4", features = ["fs"] }
+tower = { version = "=0.4.13", features = ["util"] }
+serde = { version = "=1.0.197", features = ["derive"] }
+serde_json = "=1.0.115"
+uuid = { version = "=1.7.0", features = ["v4"] }
+dashmap = "=5.5.3"
+tracing = "=0.1.40"
+tracing-subscriber = { version = "=0.3.18", features = ["env-filter"] }
+chrono = { version = "=0.4.35", features = ["serde"] }
+url = "=2.4.1"
+idna = "=0.5.0"
+
+[profile.release]
+opt-level = 3        # Max optimization (default for release)
+lto = true           # Link-Time Optimization — smaller, faster binary
+codegen-units = 1    # Single codegen unit — slower compile, better optimization
+panic = "abort"      # Remove panic unwinding overhead
+strip = true         # Strip debug symbols (requires Rust 1.59+)