wmstartup: Add tasks frameworking

Because one-off services are kind of hacky

.config/dtfscripts/common_task.sh

@@ -0,0 +1,14 @@
+#! /usr/bin/env bash
+#
+# wmstartup service common functions
+# Copyright (C) 2018 salt <salt@lap-th-e560-0>
+#
+# Distributed under terms of the MIT license.
+#
+
+# Basic logging service. Do not override unless necessary
+function tsk_log() {
+	if [ -z ${1+x} ]; then return 1; fi
+	dtf_log "$task: $1"
+}
+