Go to _ITEMS folder and register the items in your inventory.
For this resource you need to create a Discord webhook where the images will be hosted, if you don't know how to create a webhook check this: Webhook Guide.
Go to av_cameras/server/framework/_framework.lua and place the webhook link in line 1, if you don't do this step the resource will NOT start and it will print an error in server console.
Vehicle Exports
For the vehicle cameras to work properly in owned vehicles you need to place the following exports in your Garage script, the first export needs to be added in the function where the vehicle is already spawned and properly created, the following example is for qb-garages:
Note:Since there's a lot of different garage scripts, I can't add a guide for each one of them, you are responsible to add this exports to your garage script, if you don't know where the function is located ask the author of the garage script.