Add localforage lib

Signed-off-by: Kaustav Das Modak <kaustav.dasmodak@yahoo.co.in>
Update app permissions to get readonly access to DeviceStorage

Signed-off-by: Kaustav Das Modak <kaustav.dasmodak@yahoo.co.in>
First prototype of taking photo, saving and printing it

Signed-off-by: Kaustav Das Modak <kaustav.dasmodak@yahoo.co.in>