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/qtwebsockets/qtwebsockets-5.15.17.ebuild

@@ -0,0 +1,29 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+if [[ ${PV} != *9999* ]]; then
+	QT5_KDEPATCHSET_REV=1
+	KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~loong ~ppc ~ppc64 ~riscv ~x86"
+fi
+
+inherit qt5-build
+
+DESCRIPTION="Implementation of the WebSocket protocol for the Qt5 framework"
+
+IUSE="qml +ssl"
+
+DEPEND="
+	=dev-qt/qtcore-${QT5_PV}*
+	=dev-qt/qtnetwork-${QT5_PV}*[ssl=]
+	qml? ( =dev-qt/qtdeclarative-${QT5_PV}* )
+
+"
+RDEPEND="${DEPEND}"
+
+src_prepare() {
+	qt_use_disable_mod qml quick src/src.pro
+
+	qt5-build_src_prepare
+}