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ARROW-11349: [Rust] Add from_iter_values to create arrays from (non null) values

The idea of this PR is to have a function `from_iter_values` that (just like `from_iter`) creates an array based on an iterator, but from `T` instead of `Option<T>`.

I have seen some places in DataFusion (especially `to_array_of_size`) where an `Array` is generated from a `Vec` of items, which could be replaced by this.
The other iterators have some memory / time overhead in both creating and manipulating the null buffer (and in the case of `Vec` for allocating / dropping the Vec)

Closes #9293 from Dandandan/array_iter_non_null

Authored-by: Heres, Daniel <danielheres@gmail.com>
Signed-off-by: Jorge C. Leitao <jorgecarleitao@gmail.com>