Add monthly meters for solaredge integration

The Solaredge API offers the following meters at MONTHLY basis:

Production - Production energy meter
Consumption - Consumption meter
SelfConsumption - Virtual self-consumption (calculated)
FeedIn - Export energy to GRID meter
Purchased - Import energy from GRID meter

I see no reason why those meters are not exposed as sensors in HA.

https://knowledge-center.solaredge.com/sites/kc/files/se_monitoring_api.pdf > Page 25