Add script to build an AppImage

BuildLinuxAppImage.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# Environment variables
+export ARCH=x86_64
+export APPIMAGE_EXTRACT_AND_RUN=1
+export QMAKE=/usr/lib/qt6/bin/qmake
+
+# Prepare the AppDir
+DESTDIR=./AppDir ninja install
+mkdir -p ./AppDir/usr/Source/Core
+cp -r ./Source/Core/DolphinQt ./AppDir/usr/Source/Core
+rm -rf ./AppDir/usr/Source/Core/DolphinQt/CMakeFiles
+rm -rf ./AppDir/usr/Source/Core/DolphinQt/dolphin-emu_autogen
+rm ./AppDir/usr/Source/Core/DolphinQt/cmake_install.cmake
+mv ./AppDir/usr/share/dolphin-emu/sys ./AppDir/usr/bin/Sys
+rm -rf ./AppDir/usr/share/dolphin-emu
+sed -i 's/env QT_QPA_PLATFORM=xcb dolphin-emu/dolphin-emu/g' ./AppDir/usr/share/applications/dolphin-emu.desktop
+
+# Prepare Tools for building the AppImage
+wget -O linuxdeploy-x86_64.AppImage https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
+wget -O linuxdeploy-plugin-qt-x86_64.AppImage https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/continuous/linuxdeploy-plugin-qt-x86_64.AppImage
+wget -O linuxdeploy-plugin-checkrt-x86_64.sh https://github.com/linuxdeploy/linuxdeploy-plugin-checkrt/releases/download/continuous/linuxdeploy-plugin-checkrt-x86_64.sh
+wget -O appimagetool-x86_64.AppImage https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-x86_64.AppImage
+
+
+chmod a+x linuxdeploy-x86_64.AppImage
+chmod a+x linuxdeploy-plugin-qt-x86_64.AppImage
+chmod a+x linuxdeploy-plugin-checkrt-x86_64.sh
+chmod a+x appimagetool-x86_64.AppImage
+
+# Build the AppImage
+./linuxdeploy-x86_64.AppImage \
+  --appdir AppDir \
+  --plugin qt \
+  --plugin checkrt
+
+echo 'env QT_QPA_PLATFORM=xcb' >> ./AppDir/apprun-hooks/linuxdeploy-plugin-qt-hook.sh
+
+./appimagetool-x86_64.AppImage ./AppDir