Migrate Python/Chip <--> matter.js Server Fabric data

[Apollon77]

In order to allow to switch between the Python/Chip server and matter,js server dynamically we need to make sure to:

1. Migrate an existing "chip.json" Storage into matter.js Fabric format
2. Migrate the node list of an existing ".json"
3. Update the ".json" file with the node list and "next node id" fields when nodes are added in matter.js
4. Generate chip.json from matter.js Fabric when it gets newly created as initial fabric, maybe just rewrite the chip.json always on start