sys-fs/fuse-common: Add from Gentoo

It's from Gentoo commit 86f1cf927f6a27a19482e1eb25430e47d5f58ff7.

sdk_container/src/third_party/portage-stable/sys-fs/fuse-common/Manifest

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+DIST fuse-3.10.4.tar.xz 2787472 BLAKE2B 174b51bf55544bbc08e04089a4d8685b371d3f584e337ed0d8d82c62e10c14b6ef14a964d6627e8a121036db1ab4c6c1ccd413c08f8685d3d91893874427e46f SHA512 1cb7600dc04f148b15ec3183d0348320dd946cf15d4077798e7e34fe7e8202837718c8b8bd1f190b7dddda2453ee2b0433d77e18f142ecb7affec1cae29520f6

sdk_container/src/third_party/portage-stable/sys-fs/fuse-common/files/fuse.init

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+#!/sbin/openrc-run
+# Copyright 1999-2007 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+MOUNTPOINT=/sys/fs/fuse/connections
+
+depend() {
+	need localmount
+}
+
+start() {
+
+	ebegin "Starting fuse"
+	if ! grep -qw fuse /proc/filesystems; then
+		modprobe fuse >/dev/null 2>&1 || eerror $? "Error loading fuse module"
+	fi
+	if grep -qw fusectl /proc/filesystems && \
+	   ! grep -qw $MOUNTPOINT /proc/mounts; then
+		mount -t fusectl none $MOUNTPOINT >/dev/null 2>&1 || \
+			eerror $? "Error mounting control filesystem"
+	fi
+	eend ${?}
+	
+}
+
+stop() {
+
+	ebegin "Stopping fuse"
+	if grep -qw $MOUNTPOINT /proc/mounts; then
+		umount $MOUNTPOINT >/dev/null 2>&1 || \
+			eerror $? "Error unmounting control filesystem"
+	fi
+	eend ${?}
+	
+}

sdk_container/src/third_party/portage-stable/sys-fs/fuse-common/fuse-common-3.10.4.ebuild

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+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit udev
+
+DESCRIPTION="Common files for multiple slots of sys-fs/fuse"
+HOMEPAGE="https://github.com/libfuse/libfuse"
+SRC_URI="https://github.com/libfuse/libfuse/releases/download/fuse-${PV}/fuse-${PV}.tar.xz"
+
+LICENSE="GPL-2 LGPL-2.1"
+SLOT="0"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86"
+
+BDEPEND="virtual/pkgconfig"
+RDEPEND="!<sys-fs/fuse-2.9.7-r1:0"
+
+S=${WORKDIR}/fuse-${PV}
+
+src_install() {
+	udev_newrules util/udev.rules 99-fuse.rules
+
+	if use kernel_linux ; then
+		newinitd "${FILESDIR}"/fuse.init fuse
+	else
+		die "We don't know what init code install for your kernel, please file a bug."
+	fi
+
+	insinto /etc
+	doins util/fuse.conf
+}

sdk_container/src/third_party/portage-stable/sys-fs/fuse-common/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>base-system@gentoo.org</email>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">libfuse/libfuse</remote-id>
+	</upstream>
+</pkgmetadata>