[Todoist] Add folders

[kud]

Is your feature request related to a problem? Please describe.

Sometimes I use a project as a container /folder where I never won't put any tasks inside. I will only add tasks on the sub-projects. So I don't want the "add task" which takes lots of space.

My usecase is that I split between private and pro projects via a folder.

home icon is for private projects, building icon is for pro projects.

But I still like the possibility to click on those "projects" to have all issues in one page.