Returns the same class as was passed in, with dunder methods added based on the fields defined in the class.
tfdf.builder.dataclass(
    cls,
    /,
    *,
    init=True,
    repr=True,
    eq=True,
    order=False,
    unsafe_hash=False,
    frozen=False
)
Examines PEP 526 annotations to determine fields.
If init is true, an init() method is added to the class. If repr is true, a repr() method is added. If order is true, rich comparison dunder methods are added. If unsafe_hash is true, a hash() method function is added. If frozen is true, fields may not be assigned to after instance creation.