Attachemnts for sub-issue template

[BykhovDenis]

We have a third party system we use and when I get a request to setup new location there I created a template for where main task has requirememnts - that's what requester has to fill-in and then subtasks with instruction on how to do it. There are like 5-7 sub-tasks that assigned to differtent people. It's nice to have a screenshot as part of this instruction

_{Huly®: UBERF-8091}