RemoteNodeList, RemoteNodeDialog: different remote node for each network type; implement labels

[elibroftw]

Replaces #3820 Closes #3819 note that the reviewer should manually test.

[plowsof]

warnings/errors shown on first launch:

2023-05-02 01:14:46.292	E failed to parse remoteNodesSerialized Error: Cannot assign [undefined] to int
2023-05-02 01:14:46.292	W qrc:/components/RemoteNodeList.qml:0: ReferenceError: label is not defined
[...]
2023-05-02 01:14:46.293	W qrc:/components/RemoteNodeList.qml:107: ReferenceError: label is not defined
[...]

my remote node list now looks like: (after adding a label they do not show)

creating a new wallet i dont see any of my existing nodes in the suggested list:

i have not yet tested this PR's functionality todo

i see this is a rebase, thank you

[elibroftw]

I think there's 2 bugs and I think I fixed one of them so check again please.