Massively refactored everything related to entity inventory management
We are no longer recalculating mass by iterating over the entire inventory any time anything changes, for example
Gear is explicitly associated with hardpoints in the entity code
This did introduce some bugs, will clean those up tomorrow
Implemented task and control module for surveying resources
Implemented behavior for resource scanner
Resources aren't shown until they have been surveyed
Entities can now display messages, used to provide drone state feedback
Orbital entities now provide correct velocity, improving drone docking precision
