[ADD] Project: Added a subtype for task ready for next stage. [ADD] Proj...

...ect_isuue: Added a subtype for issue ready for next stage.

- Task: https://www.odoo.com/web?#id=10867&view_type=form&model=project.task&menu_id=3942&action=327
- Pad: https://pad.odoo.com/p/r.PdJGPdYheICk5isQ