[feat] Tree-like structure of the devices setup

[LordMike]

Is your feature request related to a problem? Please describe.
When working with multi-endpoint or multi-instance devices, where each instance is a replica of other instances (f.ex. buttons on a multiple-button device), it becomes cumbersome in Z2M to keep track of which value belongs to which instance.

Zensys Z-Wave PC Controller, the view is presented in a tree view to help distinguish multiple instances.

• Example view in Z2M from a ZDB5100.
• Z-Wave PC Controller view for Node 20
• Z-Wave PC Controller view for Node 20.1 - note the fewer CC's, as 20.1 doesn't expose the same features as 20 does (which exists as a backwards compatible thing)
• Z-Wave PC Controller view for Node 20.5 - note the even fewer CC's, with no RGB control for the dimming output of the ZDB5100

Describe the solution you'd like
A view in Z2M that conveys the tree-like structure of the devices setup.

Describe alternatives you've considered
N/A

Additional context
I've run Zensys Z-Wave PC Controller 5.38.

Original issue: #405

I've copied out the INIT nodes object from my Z2M to aid in the visualization of this. z2m-nodes.json.txt

[robertsLando]

@LordMike I'haven't missed this just it needs some work on the UI and in this days my time is limited :(

[LordMike]

Of course not. No pressure.. This is a big thing :)