Add zettlr to the local repo

Zettlr-1.7.4 added.

app-editors/zettlr/Manifest

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+DIST Zettlr-1.7.4-amd64.deb 68868444 BLAKE2B f4fdb617b830da82ef5cc20f319638c8a7d528ae05ccdb2eb257c6da54e3feb13445f78e25c93be3349691f85c477885ebdc5206a914631fcca2b55dd9f6276f SHA512 43db4a33b9a040e30b49f85d2f39fb4162c129259a47cbadef696e16e635cce913ec4e7ab964f2b66741dbe4b888579becbefa40e9a5a0bf13018604d4b1d000
+EBUILD zettlr-1.7.4.ebuild 1137 BLAKE2B 9d761b80d2d243179912adeb6f3f50c4cada78a65e8cac5cedb2f2a2cbc1772ff1a74026faca81e60354cec984f0f367b43689bf8180cf3a13ab5d9c2d3155de SHA512 748cbb670b9f19aedbd18af5650f3944b4c3b82a71de6b47913ab7fe803304f051576d6d73e9f05b6586b38c3d3bdd2ba5aaa0c11f13d4f48da4e3696669095c

app-editors/zettlr/zettlr-1.7.4.ebuild

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+# Copyright 2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+DESCRIPTION="Zettlr"
+HOMEPAGE="https://www.zettlr.com"
+SRC_URI="https://github.com/Zettlr/Zettlr/releases/download/v${PV}/Zettlr-${PV}-amd64.deb"
+
+LICENSE=""
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+
+DEPEND=""
+RDEPEND="${DEPEND}"
+BDEPEND=""
+
+QA_PREBUILT="opt/Zettlr/libGLESv2.so
+        opt/Zettlr/libEGL.so
+        opt/Zettlr/libvk_swiftshader.so
+        opt/Zettlr/zettlr
+        opt/Zettlr/libffmpeg.so
+        opt/Zettlr/swiftshader/libGLESv2.so
+        opt/Zettlr/swiftshader/libEGL.so"
+
+
+S="${WORKDIR}"
+
+src_prepare() {
+	default
+	unpack ../work/data.tar.xz
+}
+
+src_install() {
+	insinto /
+	doins -r opt
+	insinto /usr/share
+	doins -r usr/share/applications
+	doins -r usr/share/icons
+	fperms +x /opt/Zettlr/chrome-sandbox /opt/Zettlr/zettlr
+	fperms u+s /opt/Zettlr/chrome-sandbox
+	pax-mark m opt/Zettlr/zettlr opt/Zettlr/chrome-sandbox
+
+	dosym ../../opt/Zettlr/zettlr /usr/bin/zettlr
+}
+
+pkg_postinst() {
+	xdg_desktop_database_update
+	xdg_icon_cache_update
+}
+
+pkg_postrm() {
+	xdg_desktop_database_update
+	xdg_icon_cache_update
+}