Revert "dev-libs/mtxclient: Remove old ebuild."

Turns out <=net-im/nheko-0.8.1 doesn't work with
>=dev-libs/mtxclient-0.5.0.

This reverts commit 760f3c9463.

Signed-off-by: Ronny (tastytea) Gutbrod <gentoo@tastytea.de>

dev-libs/mtxclient/Manifest

@@ -1,2 +1,3 @@
+DIST mtxclient-0.4.1.tar.gz 572552 BLAKE2B 4d0facaffb0ce1fadc1011b7d557774bcd9ffcef7349894255b9522bcc4e9228739ad8da5a60b0addf6835cf5de3613bebc19842b6922ab9cf94f88c944d0091 SHA512 246c84bc8bc7dd6fd688c79601d16e931b5aaf5fe967d6ea226f1961df2b74ad70d4e790b7400051e007506f58ecd6594ccead31bd3c6308aa2c6727b122c203
 DIST mtxclient-0.5.0.tar.gz 582236 BLAKE2B 5166c32127973e886adadb6ad8a2895ba5ac77f78e9a774f039b0c8d4329078c0b8de965b477ce1c3a7e4cd929de8ba9b8d4f8d8b0452f6c49c873285a4d8b3a SHA512 6e1e9f5ecb1e6911b5bee85569e4477f6ee4c86ef479a3f408c8bbd187750b3b78db1db0337b51e1df9b90fee3b486eaf909bb79b69a97919685074eee3a82cd
 DIST mtxclient-0.5.1.tar.gz 582367 BLAKE2B d30a5e0e16d6783d8d1175e5f4144d845fe62897dcc7952cb1598470befa1da47a2b06cd70a60f511a1c2e7656eca2cf5a87734cbc61b79d2a05df295fd256e0 SHA512 f0a5e823bd7f3cccdf5f919c04c36a1a5ab4d2627a6f8f3fac78e4b300eda3b9e1f5060fb31e6e47267bbafc3a03f6c2a2d16c2323e63ce4889f551860e7703f

dev-libs/mtxclient/mtxclient-0.4.1.ebuild

@@ -0,0 +1,44 @@
+# Copyright 2020-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit cmake
+
+DESCRIPTION="Client API library for Matrix, built on top of Boost.Asio"
+HOMEPAGE="https://github.com/Nheko-Reborn/mtxclient"
+SRC_URI="https://github.com/Nheko-Reborn/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	>=dev-libs/boost-1.70.0
+	dev-libs/olm
+	>=dev-libs/openssl-1.1.0
+	dev-cpp/nlohmann_json
+"
+DEPEND="
+	${RDEPEND}
+	dev-libs/spdlog
+	test? ( dev-cpp/gtest )
+"
+
+# remove_failing_tests depends on remove_network_tests.
+PATCHES=(
+	"${FILESDIR}/0.3.0_remove_network_tests.patch"
+	"${FILESDIR}/0.3.0_remove_failing_tests.patch"
+)
+
+src_configure() {
+	local -a mycmakeargs=(
+		-DBUILD_LIB_TESTS="$(usex test)"
+		-DBUILD_LIB_EXAMPLES=OFF
+	)
+
+	cmake_src_configure
+}