HL7 / IAN Notification Rules : Enable additional Trigger Types

[vrindanayak]

Related #4682, #4683

Rationale : In some customer setups, additional trigger types are required to send out notifications to external clients, including (but not limited to) the following :

• First IMAGE of study received
• Study AVAILABLE in archive
• Study UNAVAILABLE in archive, caused by deletion / rejection
• FIRST_SOP : Send when the system receives the first image of the study, before any archiving activity begins.
• ARCHIVE : Send when the system initially archives a study
• LOGICAL_DELETE : Send when user logically deletes a study via the system UI Interface.
• PHYSICAL_DELETE : Send when a user physically deletes a study via the system UI Interface, or if the study is deleted via automated lifecycle activities.
• RESTORE : Send when a user restores a study via the system UI Interface that had been logically deleted.

Note : More clarification required on trigger types