epm play: added geforce-infinity (eterbug #18494)

play.d/geforce-infinity.sh

+#!/bin/sh
+
+PKGNAME=GeForceInfinity-linux
+SUPPORTEDARCHES="x86_64"
+VERSION="$2"
+DESCRIPTION='Is a next-gen application designed to enhance the GeForce NOW experience'
+URL="https://github.com/AstralVixen/GeForce-Infinity"
+
+. $(dirname $0)/common.sh
+
+arch=x86_64
+if [ "$VERSION" = "*" ] ; then
+    PKGURL=$(get_github_url "https://github.com/AstralVixen/GeForce-Infinity" "${PKGNAME}-${VERSION}-$arch.AppImage")
+else
+    PKGURL="https://github.com/AstralVixen/GeForce-Infinity/releases/download/$VERSION/${PKGNAME}-${VERSION}-$arch.AppImage"
+fi
+
+install_pkgurl