Payload-1.0: New schema for tomato payloads

[PeterKraus]

It's time to update the payload schema. The wishlist currently includes the following bits:

• pydantic-2.0 compatibility
• forward compatibility of Payload-0.2 via .update() mechanism
• separate device-specific parts of the method from (optional) general commands managed by tomato, such as:
  • maximum task duration
  • measurement frequency
  • Payload-1.x: specify task start time relative to payload start #90
  • Payload-1.x: task trigger between pipeline components #91

Tagging @edan-bainglass for comments, with respect to the AiiDAlab-Aurora schemas. It might be a good time to make the payload schema here a "subset" of the other schema.

[PeterKraus]

Implemented in dgbowl/dgbowl-schemas#43 and here in #86. The two remaining points will be transferred into a new issue.