Add license information to files for matrix-bot-matrix-reminder-bot

This commit adds copyright attributions in SPDX to the files for matrix-reminder-bot, following REUSE's specification.

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

roles/custom/matrix-bot-matrix-reminder-bot/tasks/main.yml

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2020 - 2023 Slavi Pantaleev
+# SPDX-FileCopyrightText: 2022 Marko Weltzer
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 - tags:

roles/custom/matrix-bot-matrix-reminder-bot/tasks/setup_install.yml

@@ -1,3 +1,14 @@
+# SPDX-FileCopyrightText: 2020 - 2024 Slavi Pantaleev
+# SPDX-FileCopyrightText: 2020 Stuart Mumford
+# SPDX-FileCopyrightText: 2021 - 2022 MDAD project contributors
+# SPDX-FileCopyrightText: 2022 Marko Weltzer
+# SPDX-FileCopyrightText: 2022 Jim Myhrberg
+# SPDX-FileCopyrightText: 2022 Nikita Chernyi
+# SPDX-FileCopyrightText: 2022 Sebastian Gumprich
+# SPDX-FileCopyrightText: 2024 David Mehren
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 - ansible.builtin.set_fact:

roles/custom/matrix-bot-matrix-reminder-bot/tasks/setup_uninstall.yml

@@ -1,3 +1,9 @@
+# SPDX-FileCopyrightText: 2020 - 2022 Slavi Pantaleev
+# SPDX-FileCopyrightText: 2022 Marko Weltzer
+# SPDX-FileCopyrightText: 2022 Sebastian Gumprich
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 - name: Check existence of matrix-matrix-reminder-bot service

roles/custom/matrix-bot-matrix-reminder-bot/tasks/validate_config.yml

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2020 - 2025 Slavi Pantaleev
+# SPDX-FileCopyrightText: 2022 MDAD project contributors
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 - name: Fail if required matrix-reminder-bot settings not defined