UDP Socket functions + started on Physics

- added RAGE::UDPSocket class implementing UDP both server and client
- added RAGE::Net.inetNtop, RAGE::Net::inetPton
- added RAGE::Physics::World (needs finishing), RAGE::Physics::BodyDef,
RAGE::Physics::Body (needs finishing), RAGE::Physics::Vector2
- implemented Box2D debug draw via Allegro functions.
- compiled and prepared Box2D.lib and set box2d dependency in deps
folder.
- removed Box2D source and replaced it with headers.