Tribute to deprecated components: add license information to files for matrix-email2matrix

This commit adds copyright attirbutions in SPDX format to files for matrix-email2matrix, following the REUSE's specification. ".license" files are added for config.json.j2 and matrix-email2matrix.service.j2.

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

roles/custom/matrix-email2matrix/tasks/main.yml

@@ -1,3 +1,8 @@
+# SPDX-FileCopyrightText: 2019 - 2023 Slavi Pantaleev
+# SPDX-FileCopyrightText: 2022 Marko Weltzer
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 - tags:

roles/custom/matrix-email2matrix/tasks/setup_install.yml

@@ -1,3 +1,11 @@
+# SPDX-FileCopyrightText: 2021 - 2024 Slavi Pantaleev
+# SPDX-FileCopyrightText: 2022 Nikita Chernyi
+# SPDX-FileCopyrightText: 2022 Marko Weltzer
+# SPDX-FileCopyrightText: 2022 Sebastian Gumprich
+# SPDX-FileCopyrightText: 2024 David Mehren
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 - name: Ensure Email2Matrix paths exist

roles/custom/matrix-email2matrix/tasks/setup_uninstall.yml

@@ -1,3 +1,9 @@
+# SPDX-FileCopyrightText: 2021 - 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-email2matrix service

roles/custom/matrix-email2matrix/tasks/validate_config.yml

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 - 2024 Slavi Pantaleev
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 - name: Fail if no Email2Matrix mappings