Enable native support for bytes for omegaconf 2.2.0

[rsokl]

Closes #181

bytes has had specialized support from hydra-zen. OmegaConf 2.2.0 adds native support for bytes (omry/omegaconf#845).

Now if OmegaConf 2.2.0 or higher is installed, hydra-zen will defer to OmegaConf's native support for bytes.

OmegaConf < 2.2.0 installed:

import inspect
from hydra_zen import builds, to_yaml

def f(x: bytes): ...

Conf = builds(f, x=b'123')
inspect.signature(Conf)  # <Signature (x: Any = Builds_bytes(_target_='builtins.bytes', _args_=((49, 50, 51),))) -> None>

print(to_yaml(Conf))

_target_: __main__.f
x:
  _target_: builtins.bytes
  _args_:
  - - 49
    - 50
    - 51

OmegaConf >= 2.2.0 installed:

import inspect
from hydra_zen import builds, to_yaml

def f(x: bytes): ...

Conf = builds(f, x=b'123')
inspect.signature(Conf)  # <Signature (x: bytes = b'123') -> None>

print(to_yaml(Conf))

_target_: __main__.f
x: !!binary |
  MTIz