New package: treesheets

The website states it required wxWidgets3.1, but it runs fine with our 3wxW.0 so far.
This software uses an unconventional, self-containing file hierarchy, hence the excessive `do_install()`.

The template is based on @masato9000's initial contribution to the forum (https://forum.voidlinux.eu/t/cool-apps-for-new-packagers/1642/6).
He is ok with my PR.

Closes: #7598 [via git-merge-pr]

srcpkgs/treesheets/files/treesheets.sh.in

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /usr/lib/%PKGNAME%/%EXENAME% "$@"

srcpkgs/treesheets/template

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+# Template file for 'treesheets'
+pkgname=treesheets
+version=1.0.0
+revision=1
+build_style=gnu-makefile
+makedepends="wxWidgets-devel"
+short_desc="Free Form Data Organizer"
+maintainer="Piraty <piraty1@inbox.ru>"
+license="ZLIB"
+homepage="http://strlen.com/treesheets/"
+distfiles="https://github.com/aardappel/treesheets/archive/v${version}.tar.gz"
+checksum=13c01c48a6442e309e77126aeeed51d4e0a768ad808459c0dcd83ecc1d246c0f
+
+build_wrksrc="src"
+make_use_env=1
+
+do_install() {
+	sed \
+		-e "s|%PKGNAME%|${pkgname}|" \
+		-e "s|%EXENAME%|${pkgname}|" \
+		${FILESDIR}/treesheets.sh.in > ${wrksrc}/treesheets.sh
+	vbin ${wrksrc}/treesheets.sh treesheets
+	vlicense ${wrksrc}/ZLIB_LICENSE.txt
+	vmkdir usr/lib/${pkgname} 755
+	vcopy ${wrksrc}/TS/docs usr/lib/${pkgname}
+	vinstall ${wrksrc}/TS/readme.html 644 usr/lib/${pkgname}
+	vcopy ${wrksrc}/TS/examples usr/lib/${pkgname}
+	vcopy ${wrksrc}/TS/images usr/lib/${pkgname}
+	vinstall ${wrksrc}/TS/treesheets 755 usr/lib/${pkgname}
+	vinstall ${wrksrc}/TS/treesheets.desktop 644 usr/share/applications
+	vinstall ${wrksrc}/TS/images/icon32.png 644 usr/share/pixmaps treesheets.png
+	vinstall ${wrksrc}/TS/images/icon16.png 644 usr/share/pixmaps treesheets-16x16.png
+	vinstall ${wrksrc}/TS/images/treesheets.svg 644 usr/share/pixmaps treesheets.svg
+	sed -i "s|Icon=images/treesheets.svg|Icon=treesheets.png|" ${DESTDIR}/usr/share/applications/treesheets.desktop
+	vdoc ${wrksrc}/TODO.txt
+}