Support standalone serialization of `Register` and `RegisterLayout` to the abstract representation + Hashing for coordinate collections

[HGSilveri]

• Defines the CoordsCollection helper class that creates an idempotent hash for generic collections of coordinates
• Makes BaseRegister a child class of CoordCollection and defines BaseRegister.coords_hex_hash() to create an hash in hexadecimal based solely on the coordinates
• Defines isolated JSON schemas for Register and RegisterLayout
• Adds serialization and deserialization support to/from the abstract representation
• Modify CI to test with jsonschema==4.17.3 too

[a-corni]

I am wondering if the serialization of the DetuningMap will not be needed as well...

[HGSilveri]

I am wondering if the serialization of the DetuningMap will not be needed as well...

That's a good point, I guess it might be at some point. We can either do it right now or wait until it is needed. I don't have a strong preference, I can find pros and cons for both options tbh

[a-corni]

I am wondering if the serialization of the DetuningMap will not be needed as well...

That's a good point, I guess it might be at some point. We can either do it right now or wait until it is needed. I don't have a strong preference, I can find pros and cons for both options tbh

Let's wait until it is needed then, the current PR is already finished and local addressability is perhaps not stable.