System: Add light sensor to auto configuration

[ao-david]

Background

The system option, WithRigSystemDefaults should populate all the current defaults for a controller device. It seems that the light sensor has not yet been added to this configuration even now that it is a standard component on all our rigs.

Steps to implement

• Add a new factory to model/factories.go that will return a new light sensor
• Call this factory from WithRigSystemDefaults() in rig_system.go

Sensor Configuration

Input: X70
Quantity: Other
Function: none
Args:
Units: Lux
Format: round1

[ao-david]

Perhaps tackle: ausocean/utils#25 first to be able to use a better quantity than other.