No raw encoder link point on ST_MotionStage for EL5072 (DINT)

[ZLLentz]

Current Behavior

The ST_MotionStage struct has extra data members for linking to the raw encoder value. These are used to display the raw encoder value to the user, which is otherwise not shown through the EPICS IOC.

There are link points for ULINT (EL5042), UINT (EL5101), INT (Analog input encoders), but none that match the EL5072's DINT.

Expected Behavior

Add DINT option, adjust code to use it
See https://download.beckhoff.com/download/Document/io/ethercat-terminals/EL5072en.pdf page 119

Context / environment

The new LVDT terminal will be used in prod soon