ci(feat): Add copyright check (#378)

Signed-off-by: Oliver Koenig <[email protected]>

.github/workflows/copyright-check.yml

@@ -0,0 +1,21 @@
+# Copyright (c) 2020-2021, NVIDIA CORPORATION.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# 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.
+name: Copyright check
+
+on: 
+  pull_request:
+
+jobs:
+  copyright-check:
+    uses: NVIDIA/NeMo-FW-CI-templates/.github/workflows/[email protected]