Add altv-inject user API

[xxshady]

Add api to the altv code to trigger the connection of already connected players during the start of the resource to connect them by user code decision.

Something like this

import { triggerPlayersConnect } from 'altv-esbuild'

function initDatabase() {
  // ... some database async shit
  triggerPlayersConnect()
}

[xxshady]

Is it really needed?