Refactor on Configuration class

Signed-off-by: Luiz Carlos Cavalcanti <ext-luiz-carlos.cavalcanti@nokia.com>
Created ImageUtil class for processing

Signed-off-by: Luiz Carlos Cavalcanti <ext-luiz-carlos.cavalcanti@nokia.com>
Alter Main class of preprocessor to use Utils

Signed-off-by: Luiz Carlos Cavalcanti <ext-luiz-carlos.cavalcanti@nokia.com>