Base IntelliJ Maven Project

Initialized Maven project for IntelliJ
Modified .gitignore
Maven project added at org.ddpsc.phenofron.phenofront-cv
Changed maven groupid

To remain consistent with the PhenoFront project
First push, class abstractions, one algorithm

A base to start with:
computer_vision contains OpenCV Class abstractions
algorithm will contain algorithms built up from computer_vision's
component parts
test methods currently are slated to output performance metrics and a
series of sample computed images, they aren't being used in the usual
JUnit test manner, JUnit @Test annotation is for convenience in running
all the tests at once