refactor(caesar): restructure the project to a monorepo

Cargo.toml

@@ -1,56 +1,3 @@
-[package]
-name = "caesar-transfer-iu"
-version = "0.3.1"
-edition = "2021"
-build = "src/build.rs"
-authors = ["Manuel Keidel", "Patryk Hegenberg", "Krzysztof Stankiewicz"]
-
-[[bin]]
-name = "caesar"
-path = "src/main.rs"
-
-[[bin]]
-name = "caesar-transfer-iu"
-path = "src/shuttle.rs"
-
-[dependencies]
-futures-util = "0.3"
-tungstenite = "0.21.0"
-tokio = { version = "1.28.1", features = ["full"] }
-tokio-tungstenite = { version = "0.21.0", features = [
-  "rustls-tls-webpki-roots",
-] }
-serde_json = { version = "1.0" }
-serde = { version = "1.0", features = ["derive"] }
-uuid = { version = "1.3.2", features = ["v4"] }
-tracing = "0.1.40"
-tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
-dotenv = { version = "0.15.0", features = ["clap", "cli"] }
-clap = { version = "4.5.4", features = ["derive"] }
-flume = { git = "https://github.com/zesterer/flume", rev = "80d19c49" }
-prost = "0.12.4"
-prost-types = "0.12.4"
-base64 = "0.22.0"
-url = "2.4.0"
-p256 = { version = "0.13.2", features = ["ecdh"] }
-hmac = "0.12.1"
-sha2 = "0.10.7"
-rand = { version = "0.8.5", features = ["getrandom"] }
-aes-gcm = "0.10.3"
-sanitize-filename = "0.5.0"
-qr2term = "0.3.1"
-axum = { version = "0.7.5", features = ["ws"] }
-tower-http = { version = "0.5.2", features = ["fs", "trace"] }
-axum-client-ip = "0.6.0"
-local-ip-address = "0.6.1"
-axum-extra = { version = "0.9.3", features = ["typed-header"] }
-headers = "0.4"
-tower = { version = "0.4", features = ["util"] }
-shuttle-axum = { version = "0.44.0" }
-shuttle-runtime = { version = "0.44.0" }
-dotenvy = "0.15.7"
-reqwest = { version = "0.12.4", features = ["blocking", "json"] }
-hex = "0.4.3"
-
-[build-dependencies]
-prost-build = "0.12.4"
+[workspace]
+resolver = "2"
+members = ["caesar-cli", "caesar-core", "caesar-shuttle"]