Add support for CLI model fields

[bswck]

Describe the use case of a new functionality

Easily change settings just from process arguments. There's probably something like that in Hydra, unsure.

Example Use

from configzen import ConfigModel, ConfigField, cli_param

class MyModel(ConfigModel):
    debug: bool = ConfigField(alias="debug_mode", cli_param=cli_param("-d", "--debug"))
    verbose: bool = ConfigField.cli_param("-v", "--verbose")

    def _cli_callback(self):
        ...

Integrate with argparse:

1. via arguments

   parser = argparse.ArgumentParser()
   ...
   arguments = MyModel.cli.get_parser_arguments()
   for nf_args, options in arguments.items():
       parser.add_argument(*nf_args, **options)

2. as a subparser

   parser = argparse.ArgumentParser()
   subparsers = parser.add_subparsers()
   ...
   subparsers.add_parser(MyModel.cli.as_parser("name"))

Integrate with click:

if __name__ == "__main__":
    MyModel.cli()

Integrate with typer:

app = typer.Typer()
app.add_typer(MyModel.cli.typer())

Additional context

No response