[pre-commit] Add reuse

.pre-commit-config.yaml

+# Copyright © 2022 Idiap Research Institute <contact@idiap.ch>
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
 repos:
@@ -46,3 +50,7 @@ repos:
       - id: trailing-whitespace
       - id: end-of-file-fixer
       - id: debug-statements
+  - repo: https://github.com/fsfe/reuse-tool
+    rev: v1.0.0
+    hooks:
+      - id: reuse