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GH-34790: [Go]: Add array.Diff() (#34806)

This adds an `array.Diff` function that returns an edit script that, when applied to `base`, produces `target`. This mirrors the C++ implementation. 

It does not yet include a string diff formatter.  This can be done in a follow-up.

* Closes: #34790

Authored-by: Herman Schaaf <hermanschaaf@gmail.com>
Signed-off-by: Matt Topol <zotthewizard@gmail.com>