This project contains the files to be placed into addons/HexagonDisplay2D/, and activate the plugin in Godot by going into the menu Project -> Project settings... -> Plugins -> Installed Plugins, check the Enabled checkbox under Status.
The 1x1.png is required for the UV/colors to work.
Simply install the plugin/addons and add the new node via the UI (or script).
The original idea for this was from various questions on the German Community Discord Server.