Feitoria rework suggestion

Feitoria should carry a limited amount of each resource instead of generating resources infinitely. Once a resource is depleted, it should stop being generated.

This would:

1. Get rid of the Infinite resource problem to most extents
2. be another aspect of tweaking the building for further balance changes
3. Create an interesting tradeoff in the building for delete/rebuild timings depending on what resource the port player made the building for

my initial resource suggestions:

• low amount of stone (enough to make a profit off the building's initial cost, buff the gather rate to compensate) 400?
• larger amount of gold (much more than enough to make a profit off the initial cost but still a difficult resource to get to) 800-1200?
• about as much wood as gold (as a balance on water maps) actual number would depend on the gather rates if the balance were to have them end at the same time
• an arbitrarily large amount of food (who builds feitoria for the food income?) 6000 may still be a little low