sysutils/topgrade: New port: Tool for upgrade everything

 - submitter becomes maintainer

Upgrade tool for OS and package repositories

Keeping your system up to date usually involves invoking multiple
package managers.
This results in big, non-portable shell one-liners saved in your shell.
To remedy this, topgrade detects which tools you use and runs the
appropriate commands to update them

WWW: https://github.com/r-darwish/topgrade

PR:		265451