Function Java_com_torsh_optim_Optimizer_nativeStep 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn Java_com_torsh_optim_Optimizer_nativeStep(
    _env: JNIEnv,
    _class: jclass,
    optimizer_handle: jlong,
    _parameters: jlong,
    _gradients: jlong,
    _param_count: jint,
) -> jboolean

JNI function to perform optimizer step