sysutils/usb_modeswitch: Update 2.6.0 => 2.6.2, data 20191128 => 20251207, take maintainership

Changelogs:
https://www.draisberghof.de/usb_modeswitch/ChangeLog
https://www.draisberghof.de/usb_modeswitch/ChangeLogData

Improve port:

• Replace PORTVERSION with DISTVERSION.
• Replace ".tar.bz2" with "${EXTRACT_SUFX}".
• Fix warning from portlint.
• Merge REINPLACE_CMD.
• Split long lines in do-install.
• Replace "${WRKSRC}/.." with "{WRKDIR}".

PR: 293696