AetherSX2 script update

[Rak1ta]

The AetherSX2-v1.5-3606.AppImage update was released a long time ago and we can assume that it is stable.
I haven’t tested it on Bullseye armhf/aarch64, my ssd images are 240GB, it takes a very long time to rewrite copies.

${FILENAME} is not used here and an error occurs at the end of the installation (i guess).

runme() {
    if [ ! -f "$INSTALL_DIR/aethersx2/aethersx2" ]; then
        echo -e "\nFile does not exist.\n· Something is wrong.\n· Try to install again."
        exit_message
    fi
    read -p "Press [ENTER] to run..."
    cd "$INSTALL_DIR"/aethersx2 && ./aethersx2
    exit_message

[Rak1ta]

This has been fixed with 9a9cb19. Thanks!