Add arrow-array support for Field

[HoKim98]

This PR allows the &dyn Array of arrow-array to be converted to Grafana's Field structure as easily as the Array trait of arrow2.

// AS-IS (unchanged)
let array = ::arrow2::array::PrimitiveArray::from_vec(vec![1, 2, 3]);  // Int32Array -> ::arrow2::Array trait
let field = ::grafana_plugin_sdk::data::ArrayIntoField::try_into_field(array, "field")?;

// TO-BE (added)
let array = Arc::new(::arrow_array::array::PrimitiveArray::from_vec(vec![1, 2, 3]));  // Int32Array -> Arc<dyn ::arrow_array::Array>
let field = ::grafana_plugin_sdk::data::ArrayRefIntoField::try_into_field(&array, "field")?;

Thanks to the interoperability of arrow-array and arrow2, the implementation of arrow2 closely matches that of arrow-array and is easily convertible.

However, unnecessary duplication of code occurred, and I think this can be solved by defining a macro. If you think this is necessary, I will pursue it.

[CLAassistant]

All committers have signed the CLA.

[HoKim98]

Any progress on this? 😄

[sd2k]

Woah, sorry, for some reason I didn't get notified for this! I've turned on notifications now 🙈

This looks good to me, I'll try and get it merged soon.

[sd2k]

I think this will need rebasing after #112, sorry about that.

[HoKim98]

We’re up to our ears in work :) Rebased to latest commit!

[sd2k]

Thanks for the contribution!