Change camera/renderer creation process

src/play_clj/core_deprecated.clj

@@ -0,0 +1,12 @@
+(in-ns 'play-clj.core)
+
+(defn create-renderer!
+  [{:keys [create-renderer-fn!]} & {:keys [] :as args}]
+  (:renderer (create-renderer-fn! args)))
+
+(defmulti renderer :type :default nil)
+
+(defmethod renderer nil [opts])
+
+(defmethod renderer :stage [_]
+  (Stage.))