Allow custom attachment fields to be created for use within JIRA and Issue Collectors

Summary

Currently JIRA does not allow a user to create an additional 'Attachment' type field. In the case where a customer wants to include this field in an 'Issue Collector' as a 'Required' field, the customer cannot as placing this requirement on the existing 'Attachment' field would alter this fields behavior for the entire JIRA instance.

Environment

Cloud
Server

Steps to Reproduce

• Goto: Administration > Issues > Custom Fields

or

• Type G+G
• Type in 'Custom Fields'
• Press 'Enter'

Expected Results

When clicking the 'Add custom field' button, a user should be able to search for 'Attachment'
The user should be able to apply the same type of attributes to this field as they would with the already existing 'Attachment' field: Required, etc.

Actual Results

When clicking the 'Add custom field' button and searching for 'Attachment' there are no results found as we currently do not allow for a custom field of the type 'Attachment' to be created

Notes

In the case of requiring an attachment field within an 'Issue Collector' form, this is not possible as we do not outright expose the code for the 'Issue Collector'. This means that validating the 'Attachment' field is not possible as there is no way to attach the 'onClick' event to the form submission button