🚀 Feature: OCPP 2.1 support

[xBlaz3kx]

🔖 Feature description

A couple of days ago, OCA released OCPP version 2.1 (news).
Adding support for the latest version would be great to have!

🎤 Why is this feature needed ?

It should be implemented to stay up to date with latest and greatest.

✌️ How do you aim to achieve this?

By adding new message definitions, interfaces and handler logic under a new package.

A very nice to have would be a configuration management library.

🔄️ Additional Information

I will probably start working on it by examining the spec, context and see if there are any discrepancies in the existing implementations and how much we can/should reuse.

👀 Have you spent some time to check if this feature request has been raised before?

• I checked and didn't find similar issue

[xBlaz3kx]

I discovered there might be a issue dealing with signed messages in the current implementation that would require a bit of work in the ocpp-j layer:

[xBlaz3kx]

Also discovered that it would require support for an additional OCPP-j actions: CALL_ERRORRESPONSE and SEND.