Move common components to shared lib

rc_core/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "rc_core"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+log.workspace = true
+polariton.workspace = true
+hex = "0.4"
+serde.workspace = true
+serde_json.workspace = true
+chrono = "0.4"
+polariton_server.workspace = true
+tokio = { version = "1.43", features = [ "net", "macros", "rt-multi-thread", "io-util", "time"] }