The libxmlb library is much faster to query, and does not require the daemon
to parse the XML metadata at startup. It's a zero-copy mmap design that is more
modern and less clunky.
RSS has reduced from 3Mb (peak 3.61Mb) to 1Mb (peak 1.07Mb) and the startup
time has gone from 280ms to 250ms.
This plugin requires infrastructure introduced in fwupd 1.1.3
and can not be backported to earlier versions of fwupd.
It works together with the Synaptics and Thunderbolt plugins to
coordinate the proper flashing procedure for devices in this dock.