Add implementation of the termux-camera-info & termux-camera-photo

[hugmouse]

With Termux-camera-info problems can arise due to the fact that sometimes the wrong JSON returns.

API: https://wiki.termux.com/wiki/Termux-camera-info

Description: Get information about device camera(s).

Options: none

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API: https://wiki.termux.com/wiki/Termux-camera-photo

Description: Take a photo and save it to a file in JPEG format.

Options:

-c camera-id  ID of the camera to use (see termux-camera-info), default: 0