Feature: Add an option to generate exceptions for Conjure errors

[psyclaudeZ]

Before this PR

Addressing #910.

After this PR

A few things happening:

1. Threading through a CLI option for generating the errors.
2. Core generation logic.
3. Used Claude Code to generate the tests for me.

The resulting error look like:

class product_DatasetNotFound(ConjureHTTPError):
    """Thrown when the requested dataset does not exist
    """

    ERROR_CODE = "NOT_FOUND"
    ERROR_NAMESPACE = "Datasets"
    ERROR_NAME = "DatasetNotFound"

    class SafeArgs(TypedDict):
        dataset_rid: str
        available_datasets: List[str]

    def __init__(self, base_error: ConjureHTTPError) -> None:
        super().__init__(
            status_code=base_error.status_code,
            error_code=base_error.error_code,
            error_name=base_error.error_name,
            error_instance_id=base_error.error_instance_id,
            parameters=base_error.parameters
        )
        self.safe_args: product_DatasetNotFound.SafeArgs = {
            'dataset_rid': base_error.parameters['datasetRid'],
            'available_datasets': base_error.parameters['availableDatasets']
        }

    @classmethod
    def is_instance(cls, error: ConjureHTTPError) -> bool:
        return (
            error.error_name == cls.ERROR_NAME and
            error.error_code == cls.ERROR_CODE
        )

    @classmethod
    def from_error(cls, error: ConjureHTTPError) -> 'product_DatasetNotFound':
        if not cls.is_instance(error):
            raise ValueError(f"Error is not a {cls.ERROR_NAME}")
        return cls(error)


product_DatasetNotFound.__name__ = "DatasetNotFound"
product_DatasetNotFound.__qualname__ = "DatasetNotFound"
product_DatasetNotFound.__module__ = "package_name.product"

Also placed a follow-up item for using the enum for ErrorCode after palantir/conjure-python-client#171.

==COMMIT_MSG==
Add an option to generate exceptions for Conjure errors
==COMMIT_MSG==

Possible downsides?

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✨ Features

• Add an option to generate exceptions for Conjure errors (#1157)