Selectable payment channel

[MrHash]

Description

Support selection of specific channel to attempt payment when you have multiple channels to choose from.

Context

LND supports this feature using the outgoing_chan_id parameter on payinvoice. Not sure about C-lightning. This gives the wallet user the option of making payments on a specific channel.

Possible Implementation

This could be implemented as an 'advanced' payment option or alternatively channels could be assigned a 'priority' or 'enabled' setting.

[michaelWuensch]

Thanks for the idea. Right now OnDevice LND has priority. But if we find an easy UI this would be a nice feature!