Add debianization support

Add support to generate Debian packages.
For details see debian/README.

debian/changelog is manually intialized, ready to be updated by gbp dch
command.

Tracked-On: #6688
Signed-off-by: Helmut Buchsbaum <helmut.buchsbaum@opensource.tttech-industrial.com>

debian/lifemngr/acrn-lifemngr.conf

@@ -0,0 +1,9 @@
+# ACRN lifemngr invocation configuration file
+
+# set the following items accordingly to override default:
+
+# Use 'sos' or 'uos' here. Usually detect automatically.
+# LIFEMNGR_VM=<vm type>
+
+# Use the respective serial port here:
+# LIFEMNGR_TTY=<serial port device>

debian/lifemngr/start-acrn-lifemngr.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+# helper to start ACRN lifemnr according to VM type
+
+LIFEMNGR_CONF=/usr/share/acrn-lifemngr/acrn-lifemngr.conf
+
+# eventually include configuration for overriding default configuration
+if [ -f ${LIFEMNGR_CONF} ]; then
+    . ${LIFEMNGR_CONF}
+fi
+
+LIFEMNGR_VM=${LIFEMNGR_VM:-$(if [ -c /dev/acrn_hsm ]; then echo sos; else echo uos; fi)}
+LIFEMNGR_TTY=${LIFEMNGR_TTY:-/dev/ttyS1}
+
+/usr/bin/acrn-lifemngr ${LIFEMNGR_VM} ${LIFEMNGR_TTY}