UI: add preference to disable touchpad multitouch gestures

Available on Windows and macOS, where such gestures are supported.
For Windows, disabling this option restores touchpad behavior to
match Blender 3.2.

Ref T97925

Differential Revision: https://developer.blender.org/D16005

release/scripts/startup/bl_ui/space_userpref.py

@@ -1534,6 +1534,23 @@ class USERPREF_PT_input_mouse(InputPanel, CenterAlignMixIn, Panel):
         flow.prop(inputs, "move_threshold")
 
 
+class USERPREF_PT_input_touchpad(InputPanel, CenterAlignMixIn, Panel):
+    bl_label = "Touchpad"
+    bl_options = {'DEFAULT_CLOSED'}
+
+    @classmethod
+    def poll(cls, context):
+        import sys
+        return  sys.platform[:3] == "win" or sys.platform == "darwin"
+
+    def draw_centered(self, context, layout):
+        prefs = context.preferences
+        inputs = prefs.inputs
+
+        col = layout.column()
+        col.prop(inputs, "use_multitouch_gestures")
+
+
 class USERPREF_PT_input_tablet(InputPanel, CenterAlignMixIn, Panel):
     bl_label = "Tablet"
 
@@ -2411,6 +2428,7 @@ classes = (
     USERPREF_PT_input_keyboard,
     USERPREF_PT_input_mouse,
     USERPREF_PT_input_tablet,
+    USERPREF_PT_input_touchpad,
     USERPREF_PT_input_ndof,
     USERPREF_PT_navigation_orbit,
     USERPREF_PT_navigation_zoom,