[refactor] add namespace 'crossdesk' to codebase

src/device_controller/mouse/linux/mouse_controller.cpp

@@ -4,6 +4,8 @@
 
 #include "rd_log.h"
 
+namespace crossdesk {
+
 MouseController::MouseController() {}
 
 MouseController::~MouseController() { Destroy(); }
@@ -121,4 +123,5 @@ void MouseController::SimulateMouseWheel(int direction_button, int count) {
     XTestFakeButtonEvent(display_, direction_button, False, CurrentTime);
   }
   XFlush(display_);
-}
+}
+}  // namespace crossdesk