How can I generate tileset borders that account for tiles being destroyed?

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I am trying to generate borders around a tilemap to make the tiles appear a little less rough around the edges (pun not intended), very similar to how the game Spelunky does it. The below is a good breakdown of how it works in that game.

https://github.com/Jewelots/Spelunky-Tiles/blob/master/README.md

My question is, how would I go about achieving this in Godot? Are there any features in Godot which would make this a simpler process? Anything in Godot 4 that would help?

Godot version 3.3.3 Stable
in Engine by (27 points)

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