app-shells/zsh-silver: add package

add live version, it doesn't have any release

Package-Manager: Portage-3.0.20, Repoman-3.0.3
Signed-off-by: Leonardo Hernandez Hernandez <leohdz172@outlook.com>

app-shells/zsh-silver/metadata.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<name>Leonardo Hernandez Hernandez</name>
+		<email>leohdz172@outlook.com</email>
+	</maintainer>
+	<upstream>
+		<bugs-to>https://github.com/silver-prompt/zsh/issues</bugs-to>
+		<doc>https://github.com/silver-prompt/zsh/blob/master/README.md</doc>
+	</upstream>
+</pkgmetadata>

app-shells/zsh-silver/zsh-silver-9999.ebuild

@@ -0,0 +1,35 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DESCRIPTION="Zsh plugin for silver"
+HOMEPAGE="https://github.com/silver-prompt/zsh"
+
+inherit git-r3
+EGIT_REPO_URI="https://github.com/silver-prompt/zsh.git"
+
+LICENSE="GPL-3"
+SLOT="0"
+
+RDEPEND="
+	app-shells/zsh
+	app-shells/silver
+"
+
+DEPEND="${RDEPEND}"
+
+src_install() {
+	insinto /usr/share/zsh/site-contrib/zsh-silver
+	doins silver.plugin.zsh
+
+	einstalldocs
+}
+
+pkg_postinst() {
+	elog
+	elog "In order to use ${CATEGORY}/${PN} add"
+	elog ". /usr/share/zsh/site-contrib/zsh-silver/silver.plugin.zsh"
+	elog "at the end of your ~/.zshrc"
+	elog
+}