doc(CONTRIBUTING): add section on how to add a new dependency
doc(CONTRIBUTING): add section on how to add a new dependency

noncom/ccw,laurentpetit/ccw,michelangelo13/ccw,noncom/ccw,noncom/ccw,ccw-ide/ccw,michelangelo13/ccw,laurentpetit/ccw,michelangelo13/ccw,ccw-ide/ccw,laurentpetit/ccw,ccw-ide/ccw