[Suggestion] Add a Fire Investigation extension for the Fire Department

[nateklol]

If this would get accepted I would want it to include

- Callouts like Fire Investigators would get in real life

- New undercover outfits for them to select

-New undercover vehicles with red lights for them to accept

That is all I can think of at this moment if you think this should happen and know what else should be added let me know.

[Tosfera]

Please use the given format for your suggestion.