minor usability tweaks for ISO

malcolm-iso/config/includes.chroot/etc/skel/.config/autostart/set-malcolm-gtk-bookmark.desktop

@@ -0,0 +1,7 @@
+[Desktop Entry]
+Encoding=UTF-8
+Name=set-malcolm-gtk-bookmark
+Comment=Add Malcolm directory to GTK-3.0 bookmarks
+Exec=/usr/local/bin/set-malcolm-gtk-bookmark.sh
+Terminal=false
+Type=Application

sensor-iso/config/includes.chroot/etc/skel/.config/gtk-3.0/bookmarks

@@ -0,0 +1 @@
+file:///opt/sensor/sensor_ctl

sensor-iso/config/includes.chroot/etc/skel/.config/xfce4/panel/launcher-15/16346759461.desktop

@@ -3,7 +3,7 @@ Version=1.0
 Name=Tilix
 Comment=A tiling terminal for Gnome
 Keywords=shell;prompt;command;commandline;cmd;
-Exec=tilix
+Exec=tilix --working-directory=/opt/sensor/sensor_ctl
 Terminal=false
 Type=Application
 StartupNotify=true
@@ -15,11 +15,11 @@ X-XFCE-Source=file:///usr/share/applications/com.gexperts.Tilix.desktop
 
 [Desktop Action new-window]
 Name=New Window
-Exec=tilix --action=app-new-window
+Exec=tilix --action=app-new-window --working-directory=/opt/sensor/sensor_ctl
 
 [Desktop Action new-session]
 Name=New Session
-Exec=tilix --action=app-new-session
+Exec=tilix --action=app-new-session --working-directory=/opt/sensor/sensor_ctl
 
 [Desktop Action preferences]
 Name=Preferences

shared/bin/set-malcolm-gtk-bookmark.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# Copyright (c) 2023 Battelle Energy Alliance, LLC.  All rights reserved.
+
+if ! grep -q Malcolm$ "$HOME"/.config/gtk-3.0/bookmarks && [[ -d "$HOME"/Malcolm ]]; then
+  mkdir -p "$HOME"/.config/gtk-3.0/
+  echo -e "\nfile://$HOME/Malcolm" >> "$HOME"/.config/gtk-3.0/bookmarks
+fi