* prototype to use class method to initialize Select object using an iterator
* add docstring and optional arguments to Select.from_values()
* add test widget for Select.from_values() and update documentation to include an example for its use
* add snapshot tests to Select.from_values() class method and update snapshots to include results
* address review comments
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Co-authored-by: Rodrigo Girão Serrão <5621605+rodrigogiraoserrao@users.noreply.github.com>
