Implemented image capturing from camera,
setting rectangular region of interest (ROI),
saving captured images.

Captured images can be later stitched manually, using paint, gimp etc..
Added Visual Studio Project
Now mouse click on captured image places a target on it. It will be later used for positioning  of captured images
Now mouse event receives a copy of the frame, instead of the frame itelf.
Those copies will be later organized in a vector of captured images.
Copies of captured frames are now stored in a vector.
Also, each captured frame with is shown in a new window.
Selected point (target) is also shown there.