Energy Resilience and Performance Tool

Added

• Energy Resilience Performance tool: capability to model limited reliability of backup generators and RE, and calculate survival probability metrics during power outages for a DER scenario
• Exported backup_reliability function to run the reliability based calculations

Changed

• Changed Generator inputs fuel_slope_gal_per_kwh and fuel_intercept_gal_per_hr to electric_efficiency_full_load and electric_efficiency_half_load to represent the same fuel burn curve in a different way consistent with CHP