Add FSFE REUSE compliance check

.github/workflows/reuse.reusable.yml

@@ -0,0 +1,16 @@
+# SPDX-FileCopyrightText: 2022 Free Software Foundation Europe e.V. <https://fsfe.org>
+#
+# SPDX-License-Identifier: CC0-1.0
+
+name: REUSE Compliance Check
+
+on:
+  workflow_call:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: REUSE Compliance Check
+        uses: fsfe/reuse-action@v1

.github/workflows/reuse.yml

@@ -0,0 +1,17 @@
+# SPDX-FileCopyrightText: 2022 Free Software Foundation Europe e.V. <https://fsfe.org>
+#
+# SPDX-License-Identifier: CC0-1.0
+
+name: REUSE Compliance Check
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: REUSE Compliance Check
+        uses: fsfe/reuse-action@v1

ci/.github/workflows/reuse.yml

@@ -0,0 +1,20 @@
+#
+# DO NOT EDIT THIS FILE
+#
+# It is automatically copied from https://github.com/pion/.goassets repository.
+# If this repository should have package specific CI config,
+# remove the repository name from .goassets/.github/workflows/assets-sync.yml.
+#
+# If you want to update the shared CI config, send a PR to
+# https://github.com/pion/.goassets instead of this repository.
+#
+
+name: REUSE Compliance Check
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  lint:
+    uses: pion/.goassets/.github/workflows/reuse.reusable.yml@master