Make area behave with generic properties

[kenneth-gaia]

Feature goal: Change the way the factory sim works such that the workflow of a factory designed in Godot is dictated by Gaia. Stuff created inside Godot should really just be objects which are used in place of a real world factory. Things like "pallets from inbound much go to buffer to be unpacked" should be defined in Gaia instead as "a pallet arrived in inbound, I should direct a bot to bring that to buffer". This is opposed to the current system where a giant Godot script is defining things like a buffer area which is expecting a delivery from inbound.

If you have any questions on this, please feel free to reach out to @kenneth-gaia

Original issue description:
Instead of being an inbound area, be an area that exclusively handles pallets. Instead of being production line, be an area that
handles one widget at a time.