feat: API version endpoint

src/main.rs

@@ -199,6 +199,7 @@ async fn run_server(db: Arc<DatabaseConnection>, port: u16) {
         .routes(routes!(routes::auth::auth))
         .routes(routes!(routes::auth::check_token))
         // Misc
+        .routes(routes!(routes::misc::current_api_version))
         .routes(routes!(routes::websocket::ws_handler))
 
         .with_state(shared_state.clone());

src/routes/misc.rs

@@ -0,0 +1,16 @@
+use axum::Json;
+
+#[axum::debug_handler]
+#[utoipa::path(
+    get,
+    path = "/version",
+    responses(
+        (status = OK, body = u64, description = "Current API version")
+    ),
+    summary = "Get the current API version",
+    tag = "misc",
+)]
+
+pub async fn current_api_version() -> Json<u64> {
+    Json(1)
+}

src/routes/mod.rs

@@ -2,6 +2,7 @@ pub mod auth;
 pub mod bal;
 pub mod book;
 pub mod book_instance;
+pub mod misc;
 pub mod owner;
 pub mod websocket;