feat: added mainsailos module

src/config

@@ -4,6 +4,6 @@
 export DIST_NAME=MainsailOS
 export DIST_VERSION=0.5.0
 export BASE_IMAGE_ENLARGEROOT=2500
-export MODULES="base,pkgupgrade(network,raspicam,klipper,is_req_preinstall,moonraker,mainsail,mjpgstreamer,serialcomm,password-for-sudo)"
+export MODULES="base,pkgupgrade,mainsailos(network,raspicam,klipper,is_req_preinstall,moonraker,mainsail,mjpgstreamer,serialcomm,password-for-sudo)"
 export BASE_RELEASE_COMPRESS=yes
 export BASE_IMAGE_RESIZEROOT=600

src/modules/mainsailos/config

@@ -0,0 +1,2 @@
+# This file is intentionally left blank
+# Preparation for later use cases

src/modules/mainsailos/start_chroot_script

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+# MainsailOS Specific Tweaks
+# written by Stephan Wendel aka KwadFan
+# <me@stephanwe.de>
+# GPL V3
+########
+
+
+# Source error handling, leave this in place
+set -xe
+
+# Source CustomPIOS common.sh
+source /common.sh
+install_cleanup_trap
+
+# Create mainsailos release file
+if [ -f "/etc/mainsailos_version" ]; then
+    sudo rm -f /etc/mainsailos_version
+fi
+function get_parent {
+cat /etc/os-release | grep VERSION_CODENAME | cut -d '=' -f2
+}
+echo "${DIST_NAME} release ${DIST_VERSION} ($(get_parent))" > /etc/${DIST_NAME,,}-release