If you want to add the items to ox_inventory. You can use the following configuration for your items:
Images are included in this folder.

['drone'] = {
    label = 'Drone',
    weight = 500,
    server = {
        export = 'gs_drone.drone',
    }
},

['emergencydrone'] = {
    label = 'Emergency Drone',
    weight = 500,
    server = {
        export = 'gs_drone.emergencydrone',
    }
},

If you want to use the screenshot functionality, you have to install the following resources:
- https://github.com/fivemanage/sdk
- https://github.com/citizenfx/screenshot-basic