Indicate cell contents at their location on surface maps

[AHeroicLlama]

https://discord.com/channels/1029499482028646400/1029508062899339374/1138102949306974248

For items which exist both in the Appalachia worldspace and internal cells, we would like an option to draw an indicator of the cells contents (for relevant mapped items) onto the Appalachia map.

Considerations:

1. Where do we plot the new indicator?
   • Map marker is a good start, but not all cells have map markers, and some have multiple. There appears to be little or no actual data association between mapmarkers and cells. This may result in hardcoding. Matching names covers approx 60-70%.
   • Onto the cell door? A challenge to datamine and some cells have many doors.
2. How should the indicator behave if the map has many items plotted? It could become messy quickly.
3. How should it behave for daily ops cells? Which are located exactly on their "normal" version but are technically different.

[AHeroicLlama]

We can do this inversely too - contents of any other space which is linked to by the current space, eg what exists in Appalachia for this internal map, or rarely where 2 cells are linked