Unlock sirens for all vehicle types, including custom models

[TheCrazy17]

Summary

addVehicleSirens / setVehicleSirens previously only had a visible effect on stock
cars (and the HPV1000 bike), because GTA only renders siren coronas for models 407-599.
This makes scripted sirens render — lights and sound, on every vehicle type:

• Custom (engineRequestModel) vehicles and out-of-range stock models (400-406,
  600-611) now render sirens (the CAutomobile::PreRender model-id gate is bypassed for
  vehicles that carry scripted sirens).
• Bikes, BMX, boats, planes, helis and trains now draw siren coronas via new
  PreRender entry hooks, these classes had no native siren rendering at all.
• The siren sound now plays for boat/aircraft/train audio types
  (CAEVehicleAudioEntity::ProcessVehicle only ran it for car/bike/bmx).
• The vehicle-type checks in addVehicleSirens / setVehicleSirens (client + server)
  were relaxed to allow every vehicle class; only typeless/invalid vehicles are rejected.

Motivation

Closes #4090

It also ticks one item off #1861 sirens being one of those features. It doesn't close, but it's one
less thing on the list. And honestly, I just enjoy closing issues and expanding what
you can do in MTA. :)

Test plan

Run this in client-side, get in a vehicle and enjoy:

addEventHandler('onClientPlayerVehicleEnter', root, function(vehicle, seat)
      addVehicleSirens(vehicle, 2, 2)
      setVehicleSirens(vehicle, 1, -0.4, 0, 3, 0, 0, 255, 255, 255)
      setVehicleSirens(vehicle, 2, 0.4, 0, 3, 255, 0, 0, 255, 255)
      setVehicleSirensOn(vehicle, true)
end)

addEventHandler('onClientPlayerVehicleExit', root, function(vehicle, seat)
   removeVehicleSirens(vehicle)
end)

Checklist

• Your code should follow the coding guidelines.
• Smaller pull requests are easier to review. If your pull request is beefy, your pull request should be reviewable commit-by-commit.