Add REUSE compliance checker to CI

.github/workflows/linux.yml

@@ -1,16 +1,6 @@
-# Copyright (c) 2022-2023 LunarG, Inc.
-
-# 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
+# Copyright 2022-2023 LunarG, Inc.
 #
-#     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.
+# SPDX-License-Identifier: Apache-2.0
 
 name: Linux
 
@@ -74,3 +64,10 @@ jobs:
         run: cmake -S tests/add_subdirectory -B tests/add_subdirectory/build
       - name: Build
         run: cmake --build tests/add_subdirectory/build
+
+  reuse:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: REUSE Compliance Check
+      uses: fsfe/reuse-action@v1