Set lens position from calibration data

[SzabolcsGergely]

Initally we used value 130 for lens position during calibration, which got hard-coded in examples. but that is now changed, camera dependent.

Reading the value from calibration data prior to setting lens position ensures correct RGB alignment for all boards.

[themarpe]

Shall we rather make this auto behavior and apply it from FW if not explicitly set otherwise?
CC: @Erol444

[SzabolcsGergely]

Shall we rather make this auto behavior and apply it from FW if not explicitly set otherwise? CC: @Erol444

Up to debate, merged for now, since it's an upgrade till we decide if we should or not.