Redefine Websocket Communication protocol

[Apollon77]

The current protocol is

• ID based
• "Json" serialization is very chip specific
• not fully defined in schema

We should discuss how the future protocol should look like

• Define serialization rules for each relevant datatype, make sure JS and Python (at least) can work with them (e.g. hex vs base64?)
• keys in JSON should be IDs or name based (names are better readable but take more space on the wire)
• ...
  We could already start this with the "legacy based" matter.js server?