Add rakudo.eclass and dev-raku/*

rakudo.eclass requires install-dist.raku installed by a modified version
of dev-lang/rakudo. Gentoo overlay's dev-lang/rakudo doesn't install
install-dist.raku.

rakudo.eclass is minimal and elegant. dev-raku/* packages depend on
rakudo.eclass.

Signed-off-by: amano.kenji <amano.kenji@proton.me>

dev-raku/fez/Manifest

@@ -0,0 +1 @@
+DIST fez-37.tar.gz 14300 BLAKE2B 872f8dd5a0977829fa56cd30778dce74699db59e484d50f34314cfacbed1a0686fb84c3620bafb6f58a5f89d9f2a6eb392b78ffd19d6bebef5f3a07b88ffb5ca SHA512 4669bc9fe11d7bad2e073813329a1da7edd480d20fc6c88c855072c43c89146a2753625ef91c38df193ad8a30b837c06f65b6606d22f40c4ec1a970edd619f75

dev-raku/fez/fez-37-r1.ebuild

@@ -0,0 +1,21 @@
+# Copyright 2020-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="8"
+
+inherit rakudo
+
+DESCRIPTION="Command line tool for uploading distributions to zef ecosystem"
+HOMEPAGE="https://github.com/tony-o/raku-fez"
+SRC_URI="mirror://zef/F/EZ/FEZ/0b19dd84433b44730a15983296b72bd459f4b140.tar.gz -> ${P}.tar.gz"
+LICENSE="Artistic-2"
+SLOT="0"
+KEYWORDS="~amd64"
+RESTRICT="primaryuri"
+DOCS="README.md"
+S="${WORKDIR}/dist"
+
+src_install() {
+	rakudo_src_install
+	rakudo_symlink_bin fez
+}

dev-raku/fez/metadata.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+</pkgmetadata>