Focussing guide for Surf new slits, and motion, Beckhoff critical axis

[KathrynBaker]

As someone who uses SURFI want to be able to incorporate the upgraded items within IBEX

Acceptance Criteria

The following items can be used:

• SURF Beckhoff
• TPG 500 (Extend TPG IOC to include the variations for the 500 series #7458)

[rerpha]

impeded as motion team not ready. apparently some of the new tank axes aren't using the correct motors and are therefore stalling

[rerpha]

from surfs safety system:
ISISComputingGroup/EPICS-motorExtensions#63

for FOM: ISISComputingGroup/ibex_gui#1700

#8412

the rest of the changes so far have been in the config area/autosave