Feature/scaled remaining capacity

[amarofarinha]

What

Implemented a new calculation for the reported remaining capacity in watt-hours (reported_remaining_capacity_Wh), accounting for the minimum SOC percentage. The new logic subtracts the capacity reserved by the minimum SOC from the total remaining capacity.

Why

This change resolves an issue where the remaining capacity did not properly account for the minimum SOC margin, causing inaccurate reporting of available battery capacity. The fix addresses bug #479, ensuring that the battery emulator accurately reflects the usable capacity, excluding the portion that cannot be discharged due to the defined minimum SOC margin.

How

• Added reported_remaining_capacity_Wh to datalayer and a calculation that removes the unused capacity based on the min_percentage setting (expressed in basis points).
• Updated reported_remaining_capacity_Wh to reflect the adjusted remaining capacity after the minimum SOC margin is applied.
• Changed inverter files to send the newly created datalayer.battery.status.reported_remaining_capacity_Wh instead of the previous remaining_capacity_Wh.

[dalathegreat]

Nice change! Thanks for fixing this 👍