PRP2 all exercises working

general notices:

use PRP2-A3 folder for final stateMachine, festoFunctions and listDatabase!

PRP2-A1:

basic festo transfer system functions

PRP2-A2:

state machine to sort parts by height and metal

PRP2-A3:

same (but improved) state machine as PRP2-A2. List database added with saving to .csv files.

PRP2-A3list:

test classes for the list database. same listDatabase files as PRP2-A3.

PRP2-A4:

C++ inheritance demonstration for correcting sensor values with a linear, as well as lookup table correction.

PRP2-A1+2

PRP2-A2 Netbeans working