This commit adds project updates in project to take in stock the current
status of the project : which task or milestone changed in the past 30
days.
The project manager is able to add a status on the project update, and
edit the description of the update. There is also a chatter in which
he/she can discuss some points with other project users.
The description is build with informations retrieved from mail tracking
values or from project.* models. Those informations are collected in a
dict and rendered in a template to ease the inheritence in further
modules needs.
Following commits will add behaviour to handle those updates and
milestones in the various views. See PR for further information.
PR : #68899
task-2393768