feat(es_extended): add promise support for vehicle spawn functions

[Kenshiin13]

Description

This PR enhances the ESX vehicle spawn functions to allow waiting for vehicle creation using promises, instead of requiring a callback function. Additionally, a resource leak in the ESX.Game.SpawnVehicle function has been addressed. The function now returns immediately when an invalid vehicle is requested instead of creating stale threads.

Example

local vehicle = ESX.Game.SpawnVehicle(model, coords, heading)
local vehNetId = ESX.OneSync.SpawnVehicle(model, coords, heading, vehProps)

PR Checklist

• My commit messages and PR title follow the Conventional Commits standard.
• My changes have been tested locally and function as expected.
• My PR does not introduce any breaking changes.
• I have provided a clear explanation of what my PR does, including the reasoning behind the changes and any relevant context.