Install usbtop to images (#129)

This PR installs usbtop to images for debugging purposes. If teams are
experiencing issues with USB bandwidth, usbtop can be used to determine
the data on each bus. Note that this install has no actual effect on PV
and how things are run, it's simply meant to make it available as we
expect our coprocs to be offline.

Author: samfreund

install.sh

@@ -257,6 +257,7 @@ install_if_missing libatomic1
 install_if_missing v4l-utils
 install_if_missing sqlite3
 install_if_missing openjdk-17-jre-headless
+install_if_missing usbtop
 
 debug "Setting cpufrequtils to performance mode"
 if [[ -z $TEST ]]; then