services: Add desktop environment programs as user services

Added a runit-managed kanshi, swaybg, waybar, wl-paste and wlsunset
service.

services/sv/wlsunset/log/run

@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+
+exec vlogger -t wlsunset -p daemon

services/sv/wlsunset/run

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+[ -r ./conf ] && . ./conf
+
+TIME_OPTS='-S \"09:00\" -s \"21:00\" -d \"3600\"'
+if command -v curl >/dev/null 2>&1; then
+    loc=$(curl -s ipinfo.io | grep -e '"loc": ' | sed -e 's/^.*"loc": "\(.*\)",$/\1/')
+    if [ -n "$loc" ]; then
+        lat="$(echo "$loc" | cut -d, -f1)"
+        long="$(echo "$loc" | cut -d, -f2)"
+        TIME_OPTS="-l \"$lat\" -L \"$long\""
+    fi
+fi
+
+exec 2>&1
+exec chpst -e "$TURNSTILE_ENV_DIR" wlsunset $TIME_OPTS "$@"