Nodka light controller trigger modes.

Values of this enumeration:

• SoftSwitch - Control the light by the PwmOnOff value.
• HardSwitch - Triggered by the external sensor. The light is on when the trigger input is on, the light is off when the trigger input is off.
• ExternalTrigger - The light is turned on by the rising edge of the trigger input, the duration is set by the holding time.
• SoftTrigger - The light is turned on by the API, the duration is set by the holding time.