Reorganized most of the important graphics for Stonesense

[realSquidCoder]

This will make adding new art easier. There are more changes needed but this is already a metric ton of changes.

[realSquidCoder]

I basically sorted it into the build menu categories and then alphabetically

[myk002]

I'm not sure what to think about this reorganization. It puts non-fort-specific resources in a fort-specific hierarchy, leading to cross-directory references and duplication of artwork files. I'm just not sure it makes sense.

[ab9rf]

I'm not getting the motivation here, and I can't say I'm thrilled with using sibling and parent folder references

[realSquidCoder]

The ultimate goal is to split up the sprite sheets to be more specific and make it easier for new contributors. There is a duplicate image i know of (the doorandfloodgates image) but that is going to be split int to a "doors and hatches" image and the other one will be just floodgates. stuff like that is why i want this

[realSquidCoder]

its also easier to find whats missing (for me anyways)

[myk002]

Remember that for DF, the organization of the fort mode build menu is arbitrary and disjoint from the actual object definitions and relationships.

[realSquidCoder]

fair. tbh i just wanted some sorting as a proof of concept. if theres a better way, im listening

[realSquidCoder]

i'll need to move the contents in the images later, this is more just to show what im going to do

[myk002]

I think the consensus was that there should be few/a single sprite sheet and a flat hierarchy