Add Blockly standalone

stage4/05-blockly-standalone/00-packages

+npm

stage4/05-blockly-standalone/01-run.sh

+#!/bin/bash -e
+
+# Download and build Blockly
+on_chroot << EOF
+cd /opt
+git clone https://github.com/Mobsya/thymio-blockly-standalone.git
+chmod -R 777 thymio-blockly-standalone/
+cd thymio-blockly-standalone/
+npm i
+npm run build
+EOF
+
+# Script to run Blockly, thymio-device-manager needs to be launched before Blockly
+cat > "${ROOTFS_DIR}/opt/thymio-blockly-standalone/run-blockly.sh" << EOF
+#!/bin/bash
+
+pgrep -f thymio-device-manager
+if [ \$? -eq 0 ]; then
+  echo "thymio-device-manager is already running."
+else
+  echo "Running thymio-device-manager ..."
+  thymio-device-manager& > /dev/null
+fi
+chromium-browser /opt/thymio-blockly-standalone/thymio_blockly/thymio_blockly.fr.html &> /dev/null
+EOF
+
+chmod +x "${ROOTFS_DIR}/opt/thymio-blockly-standalone/run-blockly.sh"
+
+# Add a desktop shortcut
+cat > "${ROOTFS_DIR}/home/${FIRST_USER_NAME}/Desktop/blockly.desktop" << EOF
+[Desktop Entry]
+Type=Link
+Name=Blockly
+Icon=thymio-blockly-icon
+URL=/usr/local/share/applications/blockly.desktop
+EOF
+
+cat > "${ROOTFS_DIR}/usr/local/share/applications/blockly.desktop" << EOF
+[Desktop Entry]
+Type=Application
+Name=Blockly
+Icon=thymio-blockly-icon
+Exec=/opt/thymio-blockly-standalone/run-blockly.sh
+Categories=Education;Science;
+EOF
+
+# Allow user to edit and run desktop entries
+chmod -R 777 "${ROOTFS_DIR}/home/${FIRST_USER_NAME}/Desktop/"
+
+# Add an icon for Blockly
+cp "${ROOTFS_DIR}/opt/thymio-blockly-standalone/thymio_blockly/media/thymio-blockly-icon.png" "${ROOTFS_DIR}/usr/share/pixmaps/"