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/qtquickcontrols2/qtquickcontrols2-5.15.18.ebuild

@@ -0,0 +1,32 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+if [[ ${PV} != *9999* ]]; then
+	QT5_KDEPATCHSET_REV=1
+	KEYWORDS="amd64 ~arm arm64 ~loong ppc64 ~riscv x86"
+fi
+
+inherit qt5-build
+
+DESCRIPTION="Set of next generation Qt Quick controls for the Qt5 framework"
+
+IUSE="widgets"
+
+DEPEND="
+	=dev-qt/qtcore-${QT5_PV}*
+	=dev-qt/qtdeclarative-${QT5_PV}*
+	=dev-qt/qtgui-${QT5_PV}*
+	widgets? ( =dev-qt/qtwidgets-${QT5_PV}* )
+"
+RDEPEND="${DEPEND}
+	=dev-qt/qtgraphicaleffects-${QT5_PV}*
+"
+
+src_prepare() {
+	qt_use_disable_mod widgets widgets \
+		src/imports/platform/platform.pro
+
+	qt5-build_src_prepare
+}