epm play: add gradle (eterbug #17332)

play.d/gradle.sh

+#!/bin/sh
+
+PKGNAME=gradle
+SUPPORTEDARCHES="x86_64"
+VERSION="$2"
+DESCRIPTION='Gradle is a build automation tool known for its flexibility to build software'
+URL="https://gradle.org/"
+
+. $(dirname $0)/common.sh
+
+PKGURL=$(eget --list --latest "https://gradle.org/releases/" "gradle-$VERSION-bin.zip")
+
+install_pkgurl

repack.d/gradle.sh

+#!/bin/sh -x
+
+# It will be run with two args: buildroot spec
+BUILDROOT="$1"
+SPEC="$2"
+
+. $(dirname $0)/common.sh
+
+move_to_opt "/$PRODUCT-*"
+
+add_libs_requires
+
+add_bin_exec_command $PRODUCT $PRODUCTDIR/bin/$PRODUCT
+