Added ebuild for insync.

app-office/insync/Manifest

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+DIST insync_3.4.3.40990-focal_amd64.deb 133456714 BLAKE2B 3f0dae693a6f203a10449a9c1cda40d85c29202edd36b0f0b0e7adfa5189e6b680e3f5046065afb18877ec6668592562194461e34a913c2f0511bcc3384bafc2 SHA512 8decd97ac7e46ecf7ae46c1c9ff0bbfef96003ccea15544a6df7ca7c6ca6107e4c1586bdeefb62c33450c95e75fc00ccca7829cc38f7fadb492fa4d0ced66eec
+EBUILD insync-3.4.3.40990.ebuild 1035 BLAKE2B ff6cef8fe5de3a6356a62d2f56574eaa5ae8bbddd151202cef1440bd712d67089d21bce832529ccf56b2e05ea0bfcdf622f2fb391816952f521a8e0b784afff2 SHA512 20d743194fe1655db473fd0c4548aff0316682d45474f398419bbd1b199c3ad8cb67cc3bcb74bb42fee64a37c533f1acda9f4e9cc002ddf4734ca87ff8ae5384
+MISC metadata.xml 448 BLAKE2B 84447caacd839a0cacdcc5be69d40026ffd28f206a240ffe50732ac62b8080eb339b6ebc463eed89a60d4de117a16d77f6dfca6f1c5bcb73334832d079ce139a SHA512 67b598d881f90f3b117ba43ba7e98ab2b1af85de948fec9bdd1a74556c4f3d321cc9afd8fa919e4d2454b4102717ab74601b1c5b3ceeab8379ac7f682370e8a6

app-office/insync/insync-3.4.3.40990.ebuild

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+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=7
+inherit xdg-utils font gnome2-utils eutils
+
+KEYWORDS="~amd64"
+
+DESCRIPTION="Insync extends Google Drive & OneDrive's web functionality to your desktop by integrating tightly with Linux so you can get work done"
+HOMEPAGE="https://www.insynchq.com/"
+SRC_URI="https://d2t3ff60b2tol4.cloudfront.net/builds/${PN}_${PV}-focal_amd64.deb"
+###SRC_URI="https://d2t3ff60b2tol4.cloudfront.net/builds/insync_3.4.3.40990-focal_amd64.deb"
+
+SLOT="0"
+RESTRICT="strip mirror" # mirror as explained at bug #547372
+LICENSE="insynchq-EULA"
+IUSE=""
+
+VRDEPEND="
+	x11-misc/xdg-utils/xdg-utils
+	dev-libs/nss
+	app-crypt/gnupg
+"
+
+DEPEND="
+"
+
+S="${WORKDIR}"
+
+src_prepare() {
+	unpack ./control.tar.xz
+	unpack ./data.tar.xz
+
+	eapply_user
+
+}
+
+src_install() {
+	doins -r usr
+}
+
+pkg_postinst() {
+	fdo-mime_desktop_database_update
+	fdo-mime_mime_database_update
+}
+
+pkg_postrm() {
+	fdo-mime_desktop_database_update
+	/usr/bin/gtk-update-icon-cache
+}

app-office/insync/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+        <email>canutethegreat@gmail.com</email>
+        <name>Ronald Farrer</name>
+  </maintainer>
+  <longdescription>
+    Insync extends Google Drive and OneDrive's web functionality to your desktop by integrating tightly with Linux so you can get work done
+  </longdescription>
+</pkgmetadata>