normalize function
Implementation
VARP normalize(VARP x, int acrossSpatial, int channelShared, double eps, List<double> scale) {
final (p, size) = scale.toNativeArrayF32();
final rval = VARP.fromPointer(C.mnn_expr_Normalize(x.ptr, acrossSpatial, channelShared, eps, p, size));
calloc.free(p);
return rval;
}