Add reuse compliance check

.github/workflows/reuse.yml

@@ -0,0 +1,18 @@
+# SPDX-FileCopyrightText: 2022 Free Software Foundation Europe e.V. <https://fsfe.org>
+# SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+#
+# SPDX-License-Identifier: CC0-1.0
+
+name: REUSE Compliance Check
+
+on: [push, pull_request]
+
+jobs:
+    test:
+        name: Run Compliance check
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v3
+              name: Checkout Repository
+            - name: REUSE Compliance Check
+              uses: fsfe/reuse-action@v2