README: add a short description of the rest of the packages within lnd
README: add a short description of the rest of the packages within lnd

BitfuryLightning/lnd,bryanvu/lnd,AndrewSamokhvalov/lnd,LightningNetwork/lnd,aakselrod/lnd,aakselrod/lnd,bryanvu/lnd,ddustin/lnd,LightningNetwork/lnd,ddustin/lnd,BitfuryLightning/lnd,AndrewSamokhvalov/lnd