chore: import upstream snapshot with attribution

crates/jcode-gateway-types/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "jcode-gateway-types"
+version = "0.1.0"
+edition = "2024"
+publish = false
+
+[dependencies]
+serde = { version = "1", features = ["derive"] }

crates/jcode-gateway-types/src/lib.rs

@@ -0,0 +1,19 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PairedDevice {
+    pub id: String,
+    pub name: String,
+    pub token_hash: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub apns_token: Option<String>,
+    pub paired_at: String,
+    pub last_seen: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PairingCode {
+    pub code: String,
+    pub created_at: String,
+    pub expires_at: String,
+}