Zoom camera control

[Cristuker]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
Its important to have a camera zoom control to read qrcode/barcode and others for a long distancy.

Describe the solution you'd like
Add a side bar whit zoom in and zoom ou or two buttons whit the same name

Describe alternatives you've considered
Try use external libs ou myself code but its not interessating when i use a lib to open a câmera. I dont to make a go horse.

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