fix(Sway): compile without sway

include/factory.hpp

@@ -19,6 +19,8 @@
 
 namespace waybar {
 
+class Bar;
+
 class Factory {
   public:
     Factory(Bar& bar, const Json::Value& config);

src/factory.cpp

@@ -14,10 +14,10 @@ waybar::IModule* waybar::Factory::makeModule(const std::string &name) const
     if (name == "sway/workspaces") {
       return new waybar::modules::sway::Workspaces(bar_, config_[name]);
     }
-    #endif
     if (name == "sway/window") {
       return new waybar::modules::sway::Window(bar_, config_[name]);
     }
+    #endif
     if (name == "memory") {
       return new waybar::modules::Memory(config_[name]);
     }