[Feature request] Add the possibility to use hglauncher as default assistant app

[darhma]

I use kiss launcher as my default launcher and through homebot (https://github.com/s6joui/homebot) I can use hglauncher as assistant app and I find it very convenient because it allows me to have gestures to quickly launch some apps and an additional page for widgets. I was wondering if it would be possible (and not too complicated) to natively add the ability to use hglauncher as the default assistant app.