Added base_starfall_entity.
Modified starfall_processor & starfall_screen to use new base.
Fixed Codestyle of starfall_processor & starfall_screen.
Removed Wire dependency from starfall_processor & starfall_screen.
Fixes #87, Ref #7
Added libs_sv/wire onLoad metamethod.
Creates I/O for starfall screen & processor. Moves Hi-Speed to onLoad func.
Merge pull request #128 from awilliamson/iss87

Added base_starfall_entity. Major rework to starfall_processor and starfall_screen