Test current enDat encoder capabilities

[tomtrafford]

The enDat Encoder functionality was last worked on in 2021. We need to assess what the current state of this work is. The current enDat code is in this branch. This needs to be built, and deployed on a PandA, with an enDat encoder connected. At Diamond the only place this can be done is on ViSR. We then need to test:

• Can we read the values on a Monitor Daughter card (this will use enDat sniffer code)
• Can we read and output the values on a control card (this will use enDat Master/Slave code)