decos: groupbar mouse interaction (#3102)

* allow groupbar clicking
	modified:   src/Window.cpp
	modified:   src/Window.hpp
	modified:   src/managers/input/InputManager.cpp
	modified:   src/render/decorations/CHyprGroupBarDecoration.cpp
	modified:   src/render/decorations/CHyprGroupBarDecoration.hpp

* remove setting pos inside insertWindowToGroup()

modified:   src/Window.cpp
modified:   src/layout/DwindleLayout.cpp
modified:   src/layout/MasterLayout.cpp
modified:   src/managers/KeybindManager.cpp

* add group window by index and group size functions
modified:   src/Window.cpp
modified:   src/Window.hpp
modified:   src/managers/input/InputManager.cpp

* allow dragging into groupbar
modified:   src/Window.cpp
modified:   src/layout/DwindleLayout.cpp
modified:   src/layout/MasterLayout.cpp

* allow dragging from groupbar
modified:   src/managers/KeybindManager.cpp

* try groupbar clicking before border resize
modified:   src/managers/input/InputManager.cpp

* block grabbing groupbar on floating (crash)

remove later when crashing is fixed

modified:   src/managers/KeybindManager.cpp

* remove redundant { }
modified:   src/layout/DwindleLayout.cpp
modified:   src/layout/MasterLayout.cpp

* implement getWindowDecorationBox()
modified:   src/Window.cpp
modified:   src/Window.hpp
modified:   src/layout/DwindleLayout.cpp
modified:   src/layout/MasterLayout.cpp
modified:   src/managers/KeybindManager.cpp
modified:   src/managers/input/InputManager.cpp
modified:   src/render/decorations/CHyprDropShadowDecoration.cpp
modified:   src/render/decorations/CHyprGroupBarDecoration.cpp
modified:   src/render/decorations/IHyprWindowDecoration.cpp
modified:   src/render/decorations/IHyprWindowDecoration.hpp

* fix crash when moveoutofgroup in floating windows

also removes dragging from floating windows limitation

modified:   src/layout/IHyprLayout.cpp
modified:   src/managers/KeybindManager.cpp

* use CRegion in getWindowDecorationBox()
modified:   src/helpers/Region.cpp
modified:   src/helpers/Region.hpp
modified:   src/layout/DwindleLayout.cpp
modified:   src/layout/MasterLayout.cpp
modified:   src/managers/KeybindManager.cpp
modified:   src/managers/input/InputManager.cpp
modified:   src/render/decorations/IHyprWindowDecoration.cpp
modified:   src/render/decorations/IHyprWindowDecoration.hpp

* add groupbar scrolling
modified:   src/config/ConfigManager.cpp
modified:   src/managers/input/InputManager.cpp

* change name to getWindowDecorationRegion()
modified:   src/layout/DwindleLayout.cpp
modified:   src/layout/MasterLayout.cpp
modified:   src/managers/KeybindManager.cpp
modified:   src/managers/input/InputManager.cpp
modified:   src/render/decorations/IHyprWindowDecoration.cpp
modified:   src/render/decorations/IHyprWindowDecoration.hpp

* make dragging from group less hacky for floating
modified:   src/managers/KeybindManager.cpp

src/Window.hpp

@@ -345,6 +345,8 @@ class CWindow {
     CWindow*                 getGroupTail();
     CWindow*                 getGroupCurrent();
     CWindow*                 getGroupPrevious();
+    CWindow*                 getGroupWindowByIndex(int);
+    int                      getGroupSize();
     void                     setGroupCurrent(CWindow* pWindow);
     void                     insertWindowToGroup(CWindow* pWindow);
     void                     updateGroupOutputs();