[hr, job] make cv appears in chatter

...ebsite) then show a Attachment and view like email in chatter

- Task: https://www.odoo.com/web#id=9521&view_type=form&model=project.task&menu_id=3942&action=327
- Pad: https://pad.odoo.com/p/r.e4wABT8YeyZDOmuS