Epic: improve home battery utilization

[andig]

• add a "no charge" mode for peak shaving Add NoCharge battery mode #27906
• prevent battery-assisted charging from using grid FR: Batterieunterstützung mit/ohne Netzbezug #29389
• honor buffer soc during Min+PV Hausbatterieeinstellungen auch in der Betriebsart Min+PV berücksichtigen #29553
• allow priority soc per loadpoint Separate Priority-SOC-Werte für verschiedene Verbraucher + PV-Vorhersage #29695

More battery topics see #17424

/cc @naltatis

[CiNcH83]

add a "no charge" mode for peak shaving

Guess there will be a new state charge lock then? Guess that, as the state machine grows, we have to think about which state transitions will be possible or whether we always want to go through normal first? Otherwise, every state will be quite bloated..