New accessory type "Solar"

[vgr28]

Hi, is it possible to add new accessory type "Solar" with the following topics?

topics =
'current',
'voltage',
'power',
'powerdc',
'yieldtotal',
'powerfactor',
'frequency',
'temperature',
'settings/limit',

[mastertape]

would be great also , may be a solution to ad custum fields