DC Generator, Addition DC DGNs

Submitted by Martin Perlot on the behalf of Al Thomason.

Submitted are the following new DGNs:

DC_SOURCE_STATUS_4
DC_SOURCE_STATUS_5
DC_SOURCE_STATUS_6
GENERATOR_DC_STATUS_1
GENERATOR_DC_CONFIGURATION_STATUS
GENERATOR_DC_COMMAND
GENERATOR_DC_CONFIGURATION_COMMAND
GENERATOR_DC_EQUALIZATION_STATUS
GENERATOR_DC_EQUALIZATION_CONFIGURATION_COMMAND
SOLAR_STATUS_1
SOLAR_CONFIGURATION_STATUS
SOLAR_COMMAND
SOLAR_CONFIGURATION_COMMAND
SOLAR_EQUALIZATION_STATUS
SOLAR_EQUALIZATION_CONFIGURATION

And a new device, including service points:
Solar Charge Controller