[MIRROR] Admin Request: Trigger Event Panel Includes a Gear on Events That Have Admin Setups [MDB IGNORE] (#19184)

* Admin Request: Trigger Event Panel Includes a Gear on Events That Have Admin Setups (#73151)

## About The Pull Request

![image](https://user-images.githubusercontent.com/40974010/216196611-64c943f1-7919-4be5-bd85-021d6c228f37.png)

Admin events with admin setups now have a gear icon on the right of the
button.

## Why It's Good For The Game

Requested by @ NamelessFairy for future admin compatibility development
and a small indication in game of potentially more customizable events
for... well, admin events!

## Changelog
🆑
admin: There's a cog next to events you can trigger if it has an admin
setup.
/🆑

---------

Co-authored-by: MrMelbert <51863163+MrMelbert@ users.noreply.github.com>

* Admin Request: Trigger Event Panel Includes a Gear on Events That Have Admin Setups

---------

Co-authored-by: tralezab <40974010+tralezab@users.noreply.github.com>
Co-authored-by: MrMelbert <51863163+MrMelbert@ users.noreply.github.com>
Co-authored-by: lessthanthree <83487515+lessthnthree@users.noreply.github.com>

code/modules/admin/force_event.dm

@@ -66,6 +66,7 @@
 			"description" = event_control.description,
 			"type" = event_control.type,
 			"category" = event_control.category,
+			"has_customization" = !isnull(event_control.admin_setup),
 		))
 	data["categories"] = categories
 	data["events"] = events