Adds support for HPC1 service on EV side

[MarzellT]

Describe your changes

This pull request adds the Service HPC1 as described in
"Recommendation of Charging Interface Initiative e.V. CharIN Guide ISO 15118 Service HPC1 V1.3"

Issue ticket number and link

Checklist before requesting a review

• I have performed a self-review of my code
• I have made corresponding changes to the documentation
• I read the contribution documentation and made sure that my changes meet its requirements

[SebaLukas]

In general some stuff is missing:

Renegotiation:

• In Josev the case that the EV initializes renegotiation is missing. At least add a comment to this.

PMaxScheduleEntry:

• [V2G2-PnC-CharIN-022] is missing. Explicitly add an if that MaxEntriesSAScheduleTuple is not set.

SAScheduleList:

• Check if this is the case: In service HPC1, the EV always uses the first schedule.