Calculate scaled remaining capacity using estimated total capacity from SOC

[amarofarinha]

What

Implemented a new approach to calculate the scaled remaining capacity by estimating the total battery capacity based on the real remaining capacity and SOC, then adjusting for min_soc to determine the reserved capacity.

Why

This method provides a more accurate representation of usable capacity, as the real remaining capacity and SOC values do not directly align with the fixed total capacity. The updated calculation accommodates variations in reported capacity, improving accuracy for systems where SOC and capacity data fluctuate, like in the Leaf battery.

How

• Estimated total capacity by factoring in the current real remaining capacity and SOC.
• Calculated reserved capacity based on min_soc.
• Updated reported_remaining_capacity_Wh to reflect this refined capacity calculation.

[dalathegreat]

LGTM!