feat: scaffold relay client auth workspace

Cargo.toml

@@ -0,0 +1,21 @@
+[workspace]
+members = ["common", "relay", "client", "auth-api"]
+resolver = "2"
+
+[workspace.package]
+edition = "2024"
+
+[workspace.dependencies]
+anyhow = "1.0"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+tokio = { version = "1.44", features = ["full"] }
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "fmt"] }
+uuid = { version = "1.16", features = ["v4", "serde"] }
+thiserror = "2.0"
+fastrand = "2.3"
+axum = "0.8"
+redis = { version = "0.32", features = ["tokio-comp", "connection-manager"] }
+jsonwebtoken = "10"
+chrono = { version = "0.4", features = ["serde", "clock"] }