Currently fix WindowSystem event names; AudioFormatType from int to int

This pull request solves following problems when targetting web:
```
snow/platform/web/assets/AssetSystem.hx:274: characters 23-30 : snow.types.AudioFormatType should be Int
snow/platform/web/window/WindowSystem.hx:475: characters 27-55 : snow.types.WindowEventType has no field window_leave
snow/platform/web/window/WindowSystem.hx:492: characters 27-55 : snow.types.WindowEventType has no field window_enter
snow/platform/web/window/WindowSystem.hx:116: characters 35-63 : snow.types.WindowEventType has no field window_moved
snow/platform/web/window/WindowSystem.hx:127: characters 35-70 : snow.types.WindowEventType has no field window_size_changed
```