ci(reuse): Add reuse check

Signed-off-by: Andy Scherzinger <[email protected]>

.github/workflows/reuse.yml

@@ -0,0 +1,22 @@
+# This workflow is provided via the organization template repository
+#
+# https://github.com/nextcloud/.github
+# https://docs.github.com/en/actions/learn-github-actions/sharing-workflows-with-your-organization
+
+# SPDX-FileCopyrightText: 2022 Free Software Foundation Europe e.V. <https://fsfe.org>
+#
+# SPDX-License-Identifier: CC0-1.0
+
+name: REUSE Compliance Check
+
+on: [pull_request]
+
+jobs:
+  reuse-compliance-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: REUSE Compliance Check
+        uses: fsfe/reuse-action@bb774aa972c2a89ff34781233d275075cbddf542 # v5.0.0