introduce setup.go to handle initial wallet setup/create plus openening
introduce setup.go to handle initial wallet setup/create plus openening

* will be useful for future tests

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