Workspace swipe rework

[horriblename]

Some time ago Hyprland added touch gestures for workspace swipe, so now we can use the slightly less hacky internal APIs for our own.

• The new workspace swipe should be implemented using: g_pInputManager->beginWorkspaceSwipe, updateWorkspaceSwipe and endWorkspaceSwipe. These are private methods so the following hack needs to be used:

#define private public
#include <hyprland/src/...>
#undef private

(even the official hyprexpo plugin does this so don't think about it)

• Take a look at how the gestures are handled in https://github.com/hyprwm/Hyprland/blob/main/src/managers/input/Touch.cpp

• in hyprgrass, emulateSwipeBegin would be a good place to start