Allow custom derivation path for custom nodes

[jonathansmirnoff]

What problem are you trying to solve?
Allow to set a custom derivation path for custom nodes. It will allow to have a better interaction with others chains and reduce risk.

Describe the solution you'd like
Add a new field in custom node configuration to allow to set a specific derivation path.

[lentils79]

The option to specify a custom derivation path is needed for the 'connect hardware wallet' feature.

[alepc253]

And it would be awesome -and necessary too- for networks like RSK