[IMP] (hr, sale)_timesheet, pad(_project): improve project general UX

Purpose fo the task is to improve the UX of timesheet, project and task.

Done the chages for below point:
  - improve the stage demo data to unified the project stage
  - on the task timesheet 'sub-tasks hours spent' should be clickable
and on click, it will display the list of subtask timesheet.
  - display in warning tasks for which Remaining Hours < 0 if Planned Hours > 0 in task list view
  - improve the settings of collabrative pad and planning and project form view

Task-2129052

closes odoo/odoo#41092

Closes: #41092
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>