Add packaging script's

info of packaging_script Debian, Ubuntu, Windows
https://qelectrotech.org/wiki_new/doc/packaging_debian#packaging_script_debian_ubuntu_windows

Laurent,
can you check the scripts if they work now,
I'll then change them to scripts that can handle git Submodules

packaging_script_Flatpak.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+#set -x
+
+#delete old qet.h
+rm sources/qet.h
+
+cd sources
+git reset --hard origin/master
+
+cd ..
+
+# Fait une mise à jour
+git pull
+#git checkout test_pugi
+
+sed -i 's/DEFINES += QET_EXPORT_PROJECT_DB/#DEFINES += QET_EXPORT_PROJECT_DB/' qelectrotech.pro
+
+GITCOMMIT=$(git rev-parse --short HEAD)
+A=$(git rev-list HEAD --count)
+HEAD=$(($A+473))
+
+VERSION=$(cat sources/qet.h | grep "const QString version" | cut -d\" -f2 | cut -d\" -f1)          #Find version tag in GIT sources/qet.h
+tagName=$(cat sources/qet.h | grep displayedVersion | cut -d\" -f2 | cut -d\" -f1)                 #Find displayedVersion tag in GIT sources/qet.h
+
+# recupere le numero de la nouvelle revision
+#revAp=$(svnversion | cut -d : -f 2 | tr -d '[:alpha:]')
+
+# On recupere le numero de version de l'originale
+tagName=$(sed -n "s/const QString displayedVersion =\(.*\)/\1/p" sources/qet.h | cut -d\" -f2 | cut -d\" -f1 )
+
+# On modifie l'originale avec le numero de revision du depot svn
+sed -i 's/'"const QString displayedVersion =.*/const QString displayedVersion = \"$tagName+$GITCOMMIT\";"'/' sources/qet.h
+
+cd ~
+flatpak-builder --force-clean --ccache --repo=qet_git/0.8-dev qet_git/build-dir qet_git/build-aux/flatpak/org.qelectrotech.QElectroTech.json --gpg-sign=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX --gpg-homedir=gpg
+flatpak build-update-repo qet_git/0.8-dev --title="Development builds of QElectroTech" --prune --prune-depth=4 --generate-static-deltas --gpg-sign=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX --gpg-homedir=gpg
+rsync -e ssh -av --delete-after --no-owner --no-g --chmod=g+w --progress qet_git/0.8-dev/ scorpio810@ssh.tuxfamily.org:/home/qet/qet-repository/builds/Flatpak/