[crm] implementation planner

- Task: https://www.odoo.com/web/#id=8592&view_type=form&model=project.task&menu_id=3942&action=327
- Pad: https://pad.odoo.com/p/r.4BHh6hQdZ4GPR2qE
i think we cant move it to the update_ui_progress_bar function as we are having two progress-bar in different Widget(first one is for planner launcher and second one is for planner dialog) and we trigger the method based on 'progress' variable of planner dialog. so i think it should be isolated. :)