Add daily/weekly systemd timer setup

roles/arch/templates/timer/daily_target.j2

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+# {{ ansible_managed }} {{ ansible_date_time.time }} {{ ansible_date_time.date }}
+#
+# Add the following to your service unit to make use of this target:
+# Wants=daily.target
+#
+# Or symlink the unit file to the daily.target.wants directory manually
+[Unit]
+Description=Daily timer target
+Requires=multi-user.target

roles/arch/templates/timer/daily_timer.j2

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+# {{ ansible_managed }} {{ ansible_date_time.time }} {{ ansible_date_time.date }}
+#
+[Unit]
+Description=Timer which runs all services on a daily basis inside the daily.target.wants directory
+
+[Timer]
+OnCalendar=daily
+Unit=daily.target
+Persistent=true
+
+[Install]
+WantedBy=timers.target

roles/arch/templates/timer/weekly_target.j2

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+# {{ ansible_managed }} {{ ansible_date_time.time }} {{ ansible_date_time.date }}
+#
+# Add the following to your service unit to make use of this target:
+# Wants=weekly.target
+#
+# Or symlink the unit file to the weekly.target.wants directory manually
+
+[Unit]
+Description=Weekly timer target
+Requires=multi-user.target

roles/arch/templates/timer/weekly_timer.j2

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+# {{ ansible_managed }} {{ ansible_date_time.time }} {{ ansible_date_time.date }}
+#
+[Unit]
+Description=Timer which runs all services on a weekly basis inside the weekly.target.wants directory
+
+[Timer]
+OnCalendar=weekly
+Unit=weekly.target
+Persistent=true
+
+[Install]
+WantedBy=timers.target