add license to build.rs

node-gui/build.rs

@@ -1,3 +1,18 @@
+// Copyright (c) 2021-2023 RBB S.r.l
+// [email protected]
+// SPDX-License-Identifier: MIT
+// Licensed under the MIT License;
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// https://github.com/mintlayer/mintlayer-core/blob/master/LICENSE
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #[cfg(windows)]
 extern crate winres;