Purpose
=======
Allow the users to themselves mark their course as "done" or "not done"
Specifications
==============
When the course is a "Training" in fullscreen or in non-fullscreen, or
when the course is a "Documentation" in fullscreen mode, allow the user
to click on the "done" button in the sidebar.
When the course is a "Documentation" in non-fullscreen mode, add a
button "Mark Not Done" when the slide is done.
The quiz and the certification cannot be marked as done manually, the
user has to complete the questions for that.
A certification cannot be marked as "Not Done" (but a quiz can).
In the non-fullscreen view, mark content as done automatically like we
do for the fullscreen view.
Technical
=========
As the fullscreen view and the non-fullscreen view will share a lot of
code, make a common class to avoid redundancy.
Task-2604792
Part-of: odoo/odoo#75561
std-odoo
e1ac0ed0a2