Adding the latest stable release with libCam v4l2 direct access.
Got a fair enough frame rate using Logitech C270. Due to this camera model lack of full MJPEG compression support in hardware, I only achieve captures using YUYV.
TODO: Tests with Logitech C920, complete MJPEG hardware engine.

Along with these, 320x240 is the only resolution which achieves a good performance, performance slows down when DEBUG is enable on Makefile.
I put some variables to control the excessive access to I2C bus, i.e all the time turning collector off and stopping the robot motors. These tweaks increased the performance.

Even if OpenCV-Classic or OCVCapture needs to be used, just download the libCam release and change the settings in tasks.cpp file, the code overall is more stable and complete.