[refactor] add namespace 'crossdesk' to codebase

src/device_controller/keyboard/linux/keyboard_capturer.cpp

@@ -3,6 +3,8 @@
 #include "keyboard_converter.h"
 #include "rd_log.h"
 
+namespace crossdesk {
+
 static OnKeyAction g_on_key_action = nullptr;
 static void* g_user_ptr = nullptr;
 
@@ -67,3 +69,4 @@ int KeyboardCapturer::SendKeyboardCommand(int key_code, bool is_down) {
   }
   return 0;
 }
+}  // namespace crossdesk

src/device_controller/keyboard/linux/keyboard_capturer.h

@@ -13,20 +13,22 @@
 
 #include "device_controller.h"
 
+namespace crossdesk {
+
 class KeyboardCapturer : public DeviceController {
  public:
   KeyboardCapturer();
   virtual ~KeyboardCapturer();
 
  public:
-  virtual int Hook(OnKeyAction on_key_action, void *user_ptr);
+  virtual int Hook(OnKeyAction on_key_action, void* user_ptr);
   virtual int Unhook();
   virtual int SendKeyboardCommand(int key_code, bool is_down);
 
  private:
-  Display *display_;
+  Display* display_;
   Window root_;
   bool running_;
 };
-
+}  // namespace crossdesk
 #endif