Enhance charging history service

[motzky]

1. Limit API response of call to endpoint charging/history to current vehicle's VIN to improve performance by skipping unnecessary database interactions, e.g. for inactive vehicles or multiple vehicles returned for each car id.
2. Add handling of SuC pricingType "CREDIT_PARTIAL_PAYMENT" to update session price correctly, if part of the session was not billed due to existing SuC credit, e.g. exceeding limit of THG credit during one session or charging more than 30 kWh after taking delivery with SoC < 50%