As its been requested by many people I've decided to finally provide the functionality that 

includes smooth transitions and fully controllable zoom functions from the config, This script is a standalone script that will work for any server, you can modify the button that you use to zoom in currently its set to Middle Mouse Button.

Functionality:

This script allows your players to zoom into things and look around all seamlessly and smooth this has been noticeably been apart of big popular FiveM Servers and now your server can have such unique features.

Heres the Preview video:
https://streamable.com/9pf6lp