Suggestion: Enabling the shotgun temp power as a costume option.

[Flints]

As title, suggestion is to take this weapon from the temp power - https://hcwiki.cityofheroes.dev/wiki/Shotgun_(Raid) and enable it for weapon customisation.

Been suggested particularly for Merc MMs who are only taking slug, but I'm partial to all rifle sets, as shooting grenades out a tommy gun is already a thing in weapon customisation.

Pro:
- Asset already exists, doesn't need to be made.
- Players can pose with a shotgun without having to farm a random drop from mayhem/safeguard.

Con
- Spaghetti code getting the asset added as weapon option.
- Machine gun fire/grenades from a shotgun.

[Vanden]

Shotguns aren't real