textproc/qrcodegen: Fix run when Java 11+ is default, take maintainership

Port require Java 8 - doesn't work with 9+:
Sep 09, 2025 4:54:36 PM qrcodegen.Loader handleException
SEVERE: null
java.lang.NoClassDefFoundError: javax/xml/bind/DataBindingException

This is because the javax.xml libraries moved in Java 9.

Improve port:

• Replace PORTVERSION with DISTVERSION.
• Use zip in USES instead of zip:infozip - work fine without archivers/unzip.
• Replace do-extract with EXTRACT_BEFORE_ARGS/EXTRACT_AFTER_ARGS.
• Parametrize qrcodegen with ${PORTNAME}.
• Install all files with one INSTALL_DATA instead of 5 in loop "for".

PR: 289421
Co-authored-by: Vladimir Druzenko <vvd@FreeBSD.org>
MFH: 2025Q3
(cherry picked from commit fa5e5ade4600c74f31e91ebc4285ae057a22903b)