New keybind for SpitfireLFMkIX: 'Undercarriage UP else DOWN (2-way Switch)'

[correca]

Hi, this is the reverse action of the existing keybind 'Undercarriage DOWN else UP (2-way Switch)'

	-- Starboard Wall

{cockpit_device_id = devices.CONTROLS, down = device_commands.Button_25, up = device_commands.Button_25, value_down = 0, value_up = 1, name = ('Undercarriage UP else DOWN (2-way Switch)'), category = {('Systems'), _('Custom')}},

[Munkwolf]

Thanks, this has been added along with some other reverse else commands.