open_channel_with_peer: return funding tx

(this makes things easier the just_in_time_channels branch)

electrum/commands.py

@@ -1141,7 +1141,7 @@ class Commands:
         funding_sat = satoshis(amount)
         push_sat = satoshis(push_amount)
         peer = await wallet.lnworker.add_peer(connection_string)
-        chan = await wallet.lnworker.open_channel_with_peer(peer, funding_sat, push_sat, password)
+        chan, funding_tx = await wallet.lnworker.open_channel_with_peer(peer, funding_sat, push_sat, password)
         return chan.funding_outpoint.to_str()
 
     @command('')

electrum/lnworker.py

@@ -1232,7 +1232,7 @@ class LNWallet(LNWorker):
             funding_sat=funding_sat,
             push_sat=push_sat,
             password=password)
-        return chan
+        return chan, funding_tx
 
     @log_exceptions
     async def _open_channel_coroutine(