qml: add lightning node id to walletdetails

electrum/gui/qml/qewallet.py

@@ -349,6 +349,10 @@ class QEWallet(AuthMixin, QObject, QtEventListener):
             })
         return result
 
+    @pyqtProperty(str, notify=dataChanged)
+    def lightningNodePubkey(self):
+        return self.wallet.lnworker.node_keypair.pubkey.hex() if self.wallet.lnworker else ''
+
     @pyqtProperty(str, notify=dataChanged)
     def derivationPrefix(self):
         keystores = self.wallet.get_keystores()