Redefines the panel object's Panel:SetPos method to operate using frame-by-frame linear interpolation (Lerp). When the panel's position is changed, it will move to the target position at the speed defined. You can undo this with Panel:DisableLerp.

Unlike the other panel animation functions, such as Panel:MoveTo, this animation method will not operate whilst the game is paused. This is because it relies on FrameTime.