v1.3.4 "CP Client JSON" better reconnect support

Node-Red package:

• Bump required NodeJS version to 16
• Bump required Node-Red version to 2

CP Client JSON node:

• Replace 3rd party reconnecting-ws with local implementation
  • New config params for min/max/inc reconnection timings
  • Node show # of reconnect retries
• msgType 99 + command "ws_state" makes node output msg.ocpp.websocket with connection status

README.md

• Long overdue spellcheck 🙄

All other:

• Mainly removing "dead wood" commented out lines