add appimage build script (credits to OnTheSpot)

scripts/build_appimage.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+echo "Cleaning up"
+rm -rf dist build
+
+echo "Installing Dependencies"
+mkdir build
+cd build
+
+curl -L -o appimagetool-x86_64.AppImage https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-x86_64.AppImage
+chmod +x appimagetool-x86_64.AppImage
+
+curl -L -o python.AppImage https://github.com/niess/python-appimage/releases/download/python3.13/python3.13.9-cp313-cp313-manylinux2014_x86_64.AppImage
+chmod +x python.AppImage
+
+./python.AppImage --appimage-extract
+mv squashfs-root SoftwareManager.AppDir
+
+echo "Build SoftwareManager.whl"
+cd ..
+build/SoftwareManager.AppDir/AppRun -m build
+
+echo "Prepare SoftwareManager AppImage"
+cd build/SoftwareManager.AppDir
+./AppRun -m pip install -r ../../requirements.txt
+./AppRun -m pip install ../../dist/main-0.0.0-py3-none-any.whl
+
+rm AppRun .DirIcon python.png python*.desktop usr/share/applications/python*.desktop
+
+cp -t . ../../src/interface/assets/logo.png ../../SoftwareManager.desktop
+cp ../../SoftwareManager.desktop usr/share/applications/
+
+echo '#! /bin/bash
+HERE="$(dirname "$(readlink -f "${0}")")"
+export PATH=$HERE/usr/bin:$PATH;
+export APPIMAGE_COMMAND=$(command -v -- "$ARGV0")
+"$HERE/opt/python3.13/bin/python3.13" "-m" "main" "$@"' > AppRun
+
+chmod -R 0755 ../SoftwareManager.AppDir
+chmod +x AppRun
+
+cp /usr/lib/x86_64-linux-gnu/libxcb-cursor.so* ../SoftwareManager.AppDir/usr/lib/
+cp /usr/lib/x86_64-linux-gnu/libxcb-xinerama.so* ../SoftwareManager.AppDir/usr/lib/
+cp /usr/lib/x86_64-linux-gnu/libxcb.so* ../SoftwareManager.AppDir/usr/lib/
+cp /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so* ../SoftwareManager.AppDir/usr/lib
+
+echo " => Build SoftwareManager AppImage"
+cd ..
+./appimagetool-x86_64.AppImage --appimage-extract
+squashfs-root/AppRun SoftwareManager.AppDir
+
+echo " => Done "