PIXI rewrite

Initial pre-alpha release of Thrust 30 rewrite.

I've decided to remove Phaser, and use only latest PixiJS, and P2 JS as external resources for Thrust games). This is because it is bulky, unstable, and missing features which are quite essential for my games. These include, zoomable camera system compatible with p2 physics collisions (implemented in the re-write version in this release), PIXI Updates (Phaser has been stuck on v2 of Pixi since years, and gives no ability for devs to update PIXI seperately from phaser, because they have to wrap every single Pixi class inside a phaser class). Also Pausing the game in phaser completely blocks game rendering, so no menus inside the game pause.

Since re-writing my game entirely from scratch I've come to realise how little I needed Phaser at all.. apart from wrapping calls to P2 and PIXI it offers very little.