Setting up REUSE: add copyright statements to files in group_vars/

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

group_vars/jitsi_jvb_servers

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2024 MDAD Team and contributors
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 jitsi_architecture: "{{ matrix_architecture }}"
 jitsi_hostname: "{{ matrix_server_fqn_jitsi }}"
 jitsi_uid: "{{ matrix_user_uid }}"

group_vars/matrix_servers

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2024 MDAD Team and contributors
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 # This variables file wires together the various components (roles) used by the playbook.