Handle HTTP errors and add model for api_info method

[mure]

• [x] This contribution adheres to CONTRIBUTING.md.

What does this Pull Request accomplish?

• Adds a response handler that catches HTTP errors and raises ApiException instances
• Base model for serializing/deserializing HTTP requeset/response bodies using Pydantic
• Model for api_info method response

What testing has been done?

Tested manually locally. Example:

from devtools import debug
from nisystemlink.clients.core import HttpConfiguration
from nisystemlink.clients.dataframe import DataFrameClient

client = DataFrameClient("https://api-stratus-test.ion.ni.com/", "foobar"))

debug(client.api_info())

Output:

scratch.py:12 <module>
    client.api_info(): ApiInfo(
        operations=OperationsV1(
            create_tables=Operation(
                available=True,
                version=1,
            ),
            delete_tables=Operation(
                available=True,
                version=1,
            ),
            modify_metadata=Operation(
                available=True,
                version=1,
            ),
            list_tables=Operation(
                available=True,
                version=1,
            ),
            read_data=Operation(
                available=True,
                version=1,
            ),
            write_data=Operation(
                available=True,
                version=1,
            ),
        ),
    ) (ApiInfo)