Purpose of this merge is to polish a bit this module before turning
it into "courses" (see task #1902304 for more details on this)
Contains
* split python model into separate main files to ease models understanding;
* split views into separate main files to ease views finding;
* rename files according to guidelines;
* merge templates in the same file to have all available at hand;
* move assets in their own file in order to remove noise from templates;
* Split javascript widgets into their own separate files
No functional behavior change should occur with this commit. Only move
has been performed.
Note that we might lose part of the history as splitting files creates a new
history for new files.
Task: #1909281Closes: #28679
qmo-odoo
6f5748d288