Create channelconfig.dart

lib/lightning/channelconfig.dart

@@ -0,0 +1,10 @@
+'package:ldk_node_package/ChannelConfig';
+
+const ChannelConfig({
+  required this.forwardingFeeProportionalMillionths,
+  required this.forwardingFeeBaseMsat,
+  required this.cltvExpiryDelta,
+  required this.maxDustHtlcExposure,
+  required this.forceCloseAvoidanceMaxFeeSatoshis,
+  required this.acceptUnderpayingHtlcs,
+});