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/qtpbfimageplugin/Manifest

@@ -0,0 +1 @@
+DIST qtpbfimageplugin-5.2.tar.gz 618857 BLAKE2B 9b21a8e4d0ea418f25a99d325ecff5fc5ccdc8f51701516ea8bccef8420e4bce9f3361ef424dde719a5f11ef73e5aba1a0ff8412518c9a2676dd3f44b7d57f1b SHA512 347bf69fbe47ae04f05def727c00aa0404287b2a8a341ce346537204fa043369ecaa2be3c55349821937c308a7e2bb8c8a261efcce8784cba552877aad8576b8

dev-qt/qtpbfimageplugin/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+    <email>grozin@gentoo.org</email>
+    <name>Andrey Grozin</name>
+  </maintainer>
+  <maintainer type="project">
+    <email>sci@gentoo.org</email>
+    <name>Gentoo Science Project</name>
+  </maintainer>
+  <upstream>
+    <remote-id type="github">tumic0/QtPBFImagePlugin</remote-id>
+  </upstream>
+</pkgmetadata>

dev-qt/qtpbfimageplugin/qtpbfimageplugin-5.2.ebuild

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+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+MY_PN="QtPBFImagePlugin"
+inherit qmake-utils
+
+DESCRIPTION="Qt image plugin for displaying Mapbox vector tiles"
+HOMEPAGE="https://github.com/tumic0/QtPBFImagePlugin/"
+SRC_URI="https://github.com/tumic0/${MY_PN}/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz"
+S="${WORKDIR}"/${MY_PN}-${PV}
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="amd64"
+
+RDEPEND="
+	dev-qt/qtbase:6[gui,opengl]
+	virtual/zlib:=
+"
+
+src_configure() {
+	eqmake6 pbfplugin.pro
+}
+
+src_install() {
+	emake INSTALL_ROOT="${D}" install
+}