ADD: added flash driver to sources

Signed-off-by: Giuseppe Monteleone <info@ing-monteleone.com>
FIX: update lib st to be stdbool aware

Signed-off-by: Giuseppe Monteleone <info@ing-monteleone.com>
CHG: renamed delay.c as tickTimer.c

Signed-off-by: Giuseppe Monteleone <info@ing-monteleone.com>
FIX: added deselect in case of wrong response to CMD0. correct time for data blok to 200 ms

Signed-off-by: Giuseppe Monteleone <info@ing-monteleone.com>