Add basic RC steam and user/pass authentication

auth/src/main.rs

@@ -1,4 +1,9 @@
+mod common;
+
+#[cfg(feature = "cardlife")]
 mod cardlife;
+#[cfg(feature = "robocraft")]
+mod robocraft;
 
 #[rocket::get("/")]
 fn index() -> &'static str {
@@ -8,7 +13,17 @@ fn index() -> &'static str {
 #[rocket::launch]
 fn rocket() -> _ {
     env_logger::init();
-    rocket::build().mount("/", rocket::routes![index])
-        .attach(cardlife::stage())
+    #[allow(unused_mut)]
+    let mut builder = rocket::build().mount("/", rocket::routes![index]);
+
+    #[cfg(feature = "cardlife")]
+    {builder = builder.attach(cardlife::stage());}
+    #[cfg(feature = "robocraft")]
+    {builder = builder.attach(robocraft::stage());}
+
+    builder
 }
 
+#[cfg(all(feature = "steam", feature = "robocraft", feature = "cardlife"))]
+compile_error!("Feature \"steam\" cannot work with features \"cardlife\" and \"robocraft\" at the same time");
+