ci: adds reuse check in prtests

.github/workflows/prtests.yml

@@ -126,3 +126,10 @@ jobs:
           python -m pip install -r requirements.dev.txt
           black --check .
           ruff .
+
+  reuse-lint-job:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: REUSE Compliance Check
+        uses: fsfe/reuse-action@v4