 Support Arrow Stream iterator types


Product: Tarantool EE
Since: 3.6

Now iterator type can be set with next API:

```c
API_EXPORT void
box_arrow_options_set_iterator(box_arrow_options_t *options, int iterator);
```

We support LT, LE, GE and GT iterators.
Requested by @nshy in https://github.com/tarantool/tarantool-ee/commit/bbc82f31545e37f55d4f211f46f5ad1755d1fcd1.