dwm: Add scrot script and config we use for dwm

dwm/.config/dwm-scrot.conf

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+scrot_dir=/home/core/Pictures

dwm/.local/bin/dwm-scrot

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+#!/bin/sh
+# /usr/bin/dwm-scrot
+#
+# simple screenshot-script using scrot
+# originally taken from manjaro-i3
+
+_conf=$HOME/.config/dwm-scrot.conf
+
+if ! [ -f $_conf ]; then
+	echo "scrot_dir=$(xdg-user-dir PICTURES)" > $_conf
+fi
+
+source $_conf
+
+if ! [ -d $scrot_dir ]; then
+	mkdir -p $scrot_dir
+fi
+
+if ! [[ -z "$2" ]]; then
+    cmd="scrot -d $2"
+else
+    cmd='scrot'
+fi
+
+case "$1" in
+	--desk|-d|$NULL)
+		cd $scrot_dir
+	        $cmd &&
+		sleep 1 &&
+		notify-send "screenshot has been saved in $scrot_dir"
+		;;
+	--window|-w)
+		cd $scrot_dir
+		$cmd -u &&
+		sleep 1 &&
+		notify-send "screenshot has been saved in $scrot_dir"
+		;;
+	--select|-s)
+		cd $scrot_dir
+		notify-send 'select an area for the screenshot' &
+		scrot -s &&
+		sleep 1 && notify-send "screenshot has been saved in $scrot_dir"
+		;;
+	--help|-h)
+		echo "
+available options:
+-d | --desk    full screen
+-w | --window  active window
+-s | --select  selection
+-h | --help    display this information
+
+The -d or -w options can be used with a delay
+by adding the number of seconds, like for example:
+'dwm-scrot -w 5'
+
+Default option is 'full screen'.
+
+The file destination can be set in ${_conf}.
+Default is $scrot_dir
+"
+		;;
+	*)
+		echo "
+== ! dwm-scrot: missing or wrong argument ! ==
+
+available options:
+-d | --desk    full screen
+-w | --window  active window
+-s | --select  selection
+-h | --help    display this information
+
+Default option is 'full screen'.
+
+The file destination can be set in ${_conf}.
+Default is $scrot_dir
+"
+
+        exit 2
+esac
+
+exit 0