katana: specifying class using name instead of class hash

[kariy]

Since dojoengine/dojo#1975, we can now specify the class hash for a contract using a user-defined name.

Prior to this change, in order for you to specify a specific class when defining a contract allocation, you have to explicitly provide a class hash to the class entry, which would later be the actual class hash of the class itself.

With the new update, instead of a class hash that would affect the resultant state, you can just give the class a name (the scope of the name is only within the JSON file, so it doesn't affect the actual genesis state) when you want to specify which class a contract should have.

To give more context:

Before

The class hash of the class will exactly be 0x10.

{
   "contracts": {
      "0x1": {
         "class": "0x10",
         ...
      }
   },
   "classes": [
      {
         "class:" "...",
         "classHash": "0x10"
      }
   ]
}

After

The class hash of the class will be computed directly from the class artifact, and the contract would still have the correct class.

{
   "contracts": {
      "0x1": {
         "class": "MyClass",
      }
   },
   "classes": [
      {
         "class:" "...",
         "name": "MyClass"
      }
   ]
}

[mimiethetechsis]

Hello @kariy, I can do this. Can it be given to me to work on?

[kariy]

Hello @kariy, I can do this. Can it be given to me to work on?

assigned, thanks!