Binding a form select to a collection

I’m building a form with 300 different municipalities. I’d like the user to be able to select on of these but it doesn’t look like there’s a way to upload hundreds of options to a select and doing it manually will take me ages.

I tried making it a dropdown instead, but making it a dropdown, while it’s possible to bind to a collection, doesn’t actually select an item but rather just tries to navigate, which is obviously not what I want.

So my question is how can I bind hundreds of items from a CSV file to a selection, or if that’s not possible how do I repurpose a dropdown menu for this purpose?

Here is my public share link: LINK
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