Gap Analysis for WattTime v3

[vaughanknight]

What happened?

We need to create a gap analysis for WattTime v3 to support #443

This includes:

• Minimum to support v3 release end of v2 support in June
  • Data type changes or schema changes
  • Path changes and mapping
  • Response codes
  • Any regression
• Any future capabilities we may want to support
  • Documentation of what these could be

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

Feature Commitment

• [X] I commit to contributing this feature as a PR and working with the GSF to merge this feature into the Carbon Aware SDK.

[vaughanknight]

I will start to create an ADR that looks at the architecture decisions we're making for v3 and do the gap analysis as a PR with this ADR

[Sophietn]

Linked issue https://github.com/Green-Software-Foundation/carbon-aware-sdk/issues/443

[danuw]

Can be closed cc #532