[SUGGESTION] Support for key icons?

Something I really love about the implementation of this mod is the custom icon implementation for particular scrap items. While I don't agree that for balance reasons the terminal operator should know what particular pieces of valuable scrap are, I do quite like the concept of the map showing a little key icon wherever a key is presently. This way you'd get a dynamic where the terminal operator can't see locked doors, but can see keys, and your players can't find keys but know of locked doors. Sounds like a fun opportunity for teamwork, and something like that could be an interesting addition to this mod if possible.

Look at the existing custom icon implementation for scrap items in the mod's codebase, likely in UI or map rendering files. Understand how icons are assigned and displayed. Then, modify the map display logic to show key icons at key locations, ensuring the terminal operator cannot see locked doors. Test the changes in-game to verify the new dynamic works as described.

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