[RUST] Arrow crate guide

[Fernando Herrera <fe...@gmail.com>]

I have been working on a guide for the Rust Arrow crate. So far I have
finished the first two chapters of it; the first one being an introduction
to apache arrow and the second one a description of the types of arrays
that can be created using the crate.

I would appreciate if you could give it a read and comment on it
https://github.com/elferherrera/arrow/blob/guide/rust/guide/guide/src/SUMMARY.md

The book can be served using mdbook and all the code is being checked using
doc-comment and cargo test.

Let me know if you have any questions

Thanks,
Fernando