Make the domain randomizer optional

[github-actions]

newton-isaac-sim/newton.py

Line 972 in 085b333

# TODO: Make the domain randomizer optional

    animation_engine = AnimationEngine(
        universe=universe,
        current_clip_config=current_animation_clip_config,
    )

    # TODO: Make the domain randomizer optional
    domain_randomizer = NewtonBaseDomainRandomizer(
        universe=universe,
        seed=158124,
        agent=newton_agent,
        randomizer_settings=randomization_config,
    )

    terrain = Terrain(universe, terrain_config, num_envs)

    # --------------- #
    #    ANIMATING    #
    # --------------- #