Add follow mouse mode to avoid refocusing under cursor (#2135)

* Add follow mouse mode to avoid refocusing under cursor

src/managers/input/InputManager.hpp

@@ -175,6 +175,9 @@ class CInputManager {
     // for hiding cursor on touch
     bool m_bLastInputTouch = false;
 
+    // for tracking mouse refocus
+    CWindow* m_pLastMouseFocus = nullptr;
+
   private:
     bool                 m_bCursorImageOverridden = false;
     eBorderIconDirection m_eBorderIconDirection   = BORDERICON_NONE;