Support passing reference of input array

[nbigaouette]

As of 42def76, the ndarray::Array input ownership is transferred to Session::run().

onnxruntime-rs/onnxruntime/src/session.rs

Line 195 in 42def76

pub fn run<T, D>(&mut self, input_arrays: Vec<Array<T, D>>) -> Result<Vec<Vec<T>>>

This means the input is dropped at the end of the inference. Would it be possible to pass a reference instead so that the input can be reused?

[aldanor]

That's the first two things I was wondering about when looking at .run() signature:

• Why is Array input ownership transferred over?.. If your input is a few kilobytes (megabytes) long, it has to be copied over every time?
• If Array ownership transfer wasn't required, then the input could be &[Array] or even impl Iterator<Array>?