Create bindings for vanilla Minecraft commands as of MC 1.20

[fisher60]

Summary

In order to validate commands with our web app, it is useful to have bindings for all Minecraft commands. Having some validation will be helpful. It would be nice for these to already be pydantic models so that they work seamlessly with the existing web app.
 
We can use this comprehensive list as our source of truth. We only need to consider commands that are compatible on PC Java edition (JE) for now.

An example implementation of this may use Pydantic models as follows:

# models.py
from pydantic import BaseModel

class Command(BaseModel):
    command: str

class GiveArgs(BaseModel):
    """give <target> <item> [<count>]"""
    target: str
    item: str
    count: int

# commands.py
import .models

class Give(Command):
    args: GiveArgs