Hey there!
I've been using tracy lately and it have helped me a lot but for using it i have to paste this code in every page where I want to use it:
require_once($CFG->dirroot.'/vendor/tracy/tracy/src/tracy.php');
use Tracy\Debugger;
Debugger::enable(Debugger::DEVELOPMENT, '/home/myuser/log-www/');
My idea is create another attribute in $CFG like "$CFG->tracy = true" and when it's true the tracy bar will appear in every page but I don't know where can I put that code in order to work everywhere.
Could you help me?