epm play: add Firestorm Viewer for Second Life (eterbug #17325)

pack.d/firestorm.sh

+#!/bin/sh
+
+TAR="$1"
+RETURNTARNAME="$2"
+
+. $(dirname $0)/common.sh
+
+erc unpack $TAR || fatal
+
+mkdir -p opt
+mv Phoenix-Firestorm-Releasex64-* $PRODUCT
+mv $PRODUCT opt/
+
+VERSION=$(echo "$TAR" | grep -oP '(?<=Releasex64-)\d+-\d+-\d+-\d+' | tr '-' '.')
+[ -n "$VERSION" ] || fatal "Can't get package version"
+
+install_file opt/firestorm/firestorm_icon.png /usr/share/pixmaps/$PRODUCT.png
+
+# create desktop file
+cat <<EOF | create_file /usr/share/applications/$PRODUCT.desktop
+[Desktop Entry]
+Version=1.0
+Type=Application
+Name=Firestorm Second Life viewer
+Comment=Second Life is a 3-D virtual world entirely built and owned by its residents
+Exec=$PRODUCT %U
+Icon=$PRODUCT
+Terminal=false
+Categories=Game
+EOF
+
+PKGNAME=$PRODUCT-$VERSION
+
+erc pack $PKGNAME.tar opt usr || fatal
+
+return_tar $PKGNAME.tar

play.d/firestorm.sh

+#!/bin/sh
+
+PKGNAME=firestorm
+SUPPORTEDARCHES="x86_64"
+VERSION="$2"
+DESCRIPTION='Firestorm Second Life viewer'
+URL="https://www.firestormviewer.org/"
+
+. $(dirname $0)/common.sh
+
+warn_version_is_not_supported
+
+PKGURL="https://downloads.firestormviewer.org/release/linux/Phoenix-Firestorm-Releasex64-6-6-17-70368.tar.xz"
+
+install_pack_pkgurl