Performance patch for MainSpoonerUpdates thread call

[daggre]

• Modify GetModelName so that it uses hash lookup tables instead of iterating through Objects/Vehicles/Peds/Pickups and hashing each name until there is a match every frame.
  • When aiming at no entity, main loop thread improved from ~1033ms to ~11ms

Before:

After:

• Add a rate limit for the 'updateSpoonerHud' SendNUIMessage. Without a rate limit, the increased frame rate overloads the NUI and it struggles to keep up with the messages.