rpc: implement new version of the PendingChannels PRC
rpc: implement new version of the PendingChannels PRC

LightningNetwork/lnd,aakselrod/lnd,AndrewSamokhvalov/lnd,aakselrod/lnd,LightningNetwork/lnd,AndrewSamokhvalov/lnd,ddustin/lnd,ddustin/lnd