Add dev-qt from an older version of the gentoo repo

Qt5 has been removed, we restore it since we still use it.

dev-qt/qtremoteobjects/qtremoteobjects-6.8.3.ebuild

@@ -0,0 +1,54 @@
+# Copyright 2024-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit qt6-build
+
+DESCRIPTION="Inter-Process Communication (IPC) library for the Qt6 framework"
+
+if [[ ${QT6_BUILD_TYPE} == release ]]; then
+	KEYWORDS="amd64 ~loong"
+fi
+
+IUSE="qml"
+
+RDEPEND="
+	~dev-qt/qtbase-${PV}:6[network]
+	qml? (
+		~dev-qt/qtbase-${PV}:6[gui]
+		~dev-qt/qtdeclarative-${PV}:6
+	)
+"
+DEPEND="
+	${RDEPEND}
+	test? ( ~dev-qt/qtbase-${PV}:6[gui] )
+"
+
+src_configure() {
+	# same issue as bug #913692 when tests are enabled
+	has_version "=dev-qt/qtdeclarative-$(ver_cut 1-3)*:6" &&
+		local mycmakeargs=( $(cmake_use_find_package qml Qt6Qml) )
+
+	qt6-build_src_configure
+}
+
+src_test() {
+	local CMAKE_SKIP_TESTS=(
+		# rarely fails randomly even with -j1, not looked further into
+		tst_modelview
+	)
+
+	# tests re-use 127.0.0.1:65213 and randomly fail if ran at same time
+	qt6-build_src_test -j1
+}
+
+src_install() {
+	qt6-build_src_install
+
+	if use test; then
+		# installs 30+ test binaries like "qt6/bin/state" and, given
+		# otherwise empty, "can" delete the directory rather than list
+		rm -r -- "${D}${QT6_BINDIR}" || die
+	fi
+}