ci: add workflow for reuse

Signed-off-by: Mikko Murto <[email protected]>

.github/workflows/reuse.yml

@@ -0,0 +1,20 @@
+# SPDX-FileCopyrightText: 2022 HH Partners
+#
+# SPDX-License-Identifier: MIT
+
+name: Reuse
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  Reuse:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: REUSE Compliance Check
+        uses: fsfe/reuse-action@v1