drag_into_group (#796)

hyprwm/Hyprland#8004

pages/Configuring/Variables.md

@@ -312,6 +312,7 @@ Described [here](../Keywords#per-device-input-configs).
 | insert_after_current | whether new windows in a group spawn after current or at group tail | bool | true |
 | focus_removed_window | whether Hyprland should focus on the window that has just been moved out of the group | bool | true |
 | merge_groups_on_drag | whether window groups can be dragged into other groups | bool | true |
+| drag_into_group | whether dragging a window into a unlocked group will merge them. Options: 0 (disabled), 1 (enabled), 2 (only when dragging into the groupbar) | int | 1 |
 | col.border_active | active group border color | gradient | 0x66ffff00 |
 | col.border_inactive | inactive (out of focus) group border color | gradient | 0x66777700 |
 | col.border_locked_active | active locked group border color | gradient | 0x66ff5500 |