[refactor] add namespace 'crossdesk' to codebase

src/device_controller/mouse/mac/mouse_controller.cpp

@@ -4,6 +4,8 @@
 
 #include "rd_log.h"
 
+namespace crossdesk {
+
 MouseController::MouseController() {}
 
 MouseController::~MouseController() {}
@@ -98,4 +100,5 @@ int MouseController::SendMouseCommand(RemoteAction remote_action,
   }
 
   return 0;
-}
+}
+}  // namespace crossdesk