Upgrade storage for easier handling of model types

[jrriehl]

trafficstars

It would be better to add methods to allow easier storage and access of model types to avoid having to do things like this:

tables = {int(num): TableStatus(**status) for (num, status) in ctx.storage._data.items()}

[Archento]

I just stumbled across JsonPickle which may help with the storage problem. I was able to deserialise complex objects without issue and where json.dumps(obj.__dict__) was just not good enough.

[Archento]

I think we can close this one for now and reopen if it get's important again.

Currently a developer can take care of the data transformations himself so something like the following is enough on an application level + more efficient as we don't have to implement introspection in the KeyValue storage.

# setting model data
dump = model_obj.json() # or model_obj.model_dump_json() for pydantic v2
ctx.storage.set("data",  dump)

# getting model data
dump = ctx.storage.get("data")
model_data = YourModel.parse_raw(dump). # or YourModel.model_validate_json() for pydantic v2

And since we have the StorageAPI in uAgents now we paved the way for other storage mechanisms to be implemented anyway. It's just a matter of resources to provide new examples.