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/qtsensors/qtsensors-6.12.9999.ebuild

@@ -0,0 +1,28 @@
+# Copyright 2023-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit qt6-build
+
+DESCRIPTION="Hardware sensor access library for the Qt6 framework"
+
+if [[ ${QT6_BUILD_TYPE} == release ]]; then
+	KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~loong ~ppc ~ppc64 ~riscv ~x86"
+fi
+
+IUSE="qml"
+
+RDEPEND="
+	~dev-qt/qtbase-${PV}:6[dbus]
+	qml? ( ~dev-qt/qtdeclarative-${PV}:6 )
+"
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	local mycmakeargs=(
+		$(cmake_use_find_package qml Qt6Qml)
+	)
+
+	qt6-build_src_configure
+}