Support for victron nodes

### Description

Would you accept a PR for supporting Victron Energy nodes from https://github.com/victronenergy/node-red-contrib-victron ?

Your flow renderer is used in their discourse forum via https://github.com/FlowFuse/discourse-flow-renderer (see https://community.victronenergy.com/t/how-to-show-your-node-red-flows-in-victron-community/40195/6)

### Requested By

_No response_

Start by reviewing the flow renderer and the linked node-red-contrib-victron project to identify how supported nodes are represented. Determine which Victron nodes need rendering and how support is verified; done means Victron flows render correctly in the renderer.

Written by the indexing model from the issue text.