Need of rescheduling feature to be included

[biodatanet]

A rescheduling feature should be allowed to the user in terms of the user being abled to change the timeslot that has been booked for the specific CPO. The user should be able to update the timeslot in terms of start and end time. This is a communication between the BAP and BPP in a peer to peer format.

[TANMOYDADA]

A rescheduling feature enables users to modify the booked charging timeslot (start and end time) through a BAP-initiated update request, validated and confirmed by the BPP via on_update.
cc @anandp504

[nirmay]

For the error cases - TSD must include following
Error block can be sent in sync (in response to request) or async (along with callback) mode and should have the following attribute keys: error.type, error.code

check v2 schema for error