`R_Version` is missing register length specification

[bruno-f-cruz]

protocol/Device.md

Line 470 in 09440f3

### **`R_VERSION` (U8) – Semantic version information**

While this can be inferred from the payload specification, we should add it for consistency

[glopesdev]

@bruno-f-cruz I guess you were thinking of something like R_DEVICE_NAME?

protocol/Device.md

Line 312 in 09440f3

### **`R_DEVICE_NAME` (25 Bytes) – Human-readable device name**

I actually don't like the way we did it for R_DEVICE_NAME (just noticed it now!) where we say (25 Bytes) since I feel we should use "U8" rather than "Bytes" for consistency. That said, saying (25 U8) is much harder to understand, which is probably why it was written the way it is.

Probably we should add the length to all registers, perhaps even on the register table, and I agree we should have a convention for specifying register lengths in the spec document.

[glopesdev]

With all the changes in the #197 this issue happened to slip by and is still not fixed.