Support system-wide Dark Style Preference in Linux

For reference please check https://blogs.gnome.org/alexm/2021/10/04/dark-style-preference/

My current Linux system already supports a system-wide dark style preference. I have seen that jami-qt already includes an option in its settings that allows me to manually choose a dark style. I would like to see the change automated so that I, as a user, can experience a smooth transition and wonderful system integration.