Added MDO30 driver + Corrected small bug in PossibleBooleanList of all attributes: This list needs to be saved per channel and not one for all (hopefully it works now)

Added MSO64 (not completely tested) and had to make some basic changes because MSO64 has a slightly different cmd structure

- Added readout cmd for Tek3000 osci
- Added Tektronix base class
- still needs some cleanup

Added class for MSO64 osci (working but needs more testing) and some files for TKDPO7k (not working / finished)