Placing addons in toolbar(urlbar) like refernce browser

i ve just learnt how to modify ,building fenix from github which is thanks to fenix devs quite simple , i ve accomplish all the modification i wanted to, except one wich is way too difficult for me as i m not a developer but i do understand what to do in case someone could ever help me.
i d like to place addons icons ,let s say ublock origin one next to url bar just like refence apk(browser) :can please someone explain how to achieve this?
i would also be happy to have addons in main menu and not in a sub menu(addonsmanager) i tried paying a bit with webextensionbuilder in defaulttoolbarmenu.kt without success.
thabks for the help!