Add basic auth support to get Cardlife working in non-offline mode

auth/src/main.rs

@@ -0,0 +1,14 @@
+mod cardlife;
+
+#[rocket::get("/")]
+fn index() -> &'static str {
+    "Hello, world!"
+}
+
+#[rocket::launch]
+fn rocket() -> _ {
+    env_logger::init();
+    rocket::build().mount("/", rocket::routes![index])
+        .attach(cardlife::stage())
+}
+