* [hermes] Add more rest api methods
Add many of the price service apis. Per David suggestion, we do
validation in parsing instead of doing it later. I didn't find
any suitable library to deserialize our hex format so I created
a macro to implement it because we use it in a couple of places.
I tried making a generic HexInput but couldn't make it working
(and I need other crates like generic_array for it which makes
the code more complex)
* Address feedbacks
Ali Behjati
Reisen