Ability to choose exit node

[HarvsG]

See netbirdio/netbird/issues/1838

It would be super nice to be able to choose preffered exit node or none in client apps.

Right now exit nodes implemented in desktop apps, but only way to control it is from netbird management server. Some users want their traffic to exit through VPN, some are not. Currently there is no easy solution for both.

Describe the solution you'd like
Ability for clients to choose prereffrable exit-node or none in client app.

@vallabhvrao @svardie, you can select a route, including the exit node, using the route selection option. See more at: https://docs.netbird.io/how-to/resolve-overlapping-routes#how-to-use-the-route-selection-feature

This option is supported in all clients except android.