owut: add new package

owut: add new package

owut (OpenWrt Update Tool) is a command line program that gathers
information from the various openwrt.org build sites and reports
status on various aspects of builds and package availability.
It also shows many details about your current configuration and
installed packages, allowing it to create, download, verify and
install new images containing the user-installed packages.

It is written completely in 'ucode', allowing for user customization
on the installed device, without the need for compilers and linkers.

Documentation is available at https://github.com/efahl/owut
Forum thread at https://forum.openwrt.org/t/owut-openwrt-upgrade-tool/200035

Signed-off-by: Eric Fahlgren <redacted>