Add license check action

Signed-off-by: Wojciech Tatarski <wtatarski@antmicro.com>

.github/workflows/ci.yml

@@ -1,3 +1,11 @@
+# Copyright (C) 2020-2021 The SymbiFlow Authors.
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier:ISC
+
 name: CI tests
 
 on: [push, pull_request]

.github/workflows/licensing.yml

@@ -0,0 +1,27 @@
+# Copyright (C) 2017-2021 The SymbiFlow Authors.
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier: ISC
+
+name: Licensing
+
+on:
+ push:
+ pull_request:
+
+
+jobs:
+ Checks:
+ runs-on: ubuntu-latest
+ steps:
+ - uses: actions/checkout@v2
+
+ - uses: SymbiFlow/actions/checks@main
+ with:
+ exclude_license: |
+ ./design_introspection-plugin/tests/selection_to_tcl_list/selection_to_tcl_list.v
+ third_party: |
+ ./third_party/googletest/