overrided `graphics::SDL2::Texture::size()`
In `graphics::SDL2::SpriteBatch::Drawer`:
  fixed:
    type of `renderer_handle` typedef
    methods (see: vulture `Drawer` abstract methods)
  added:
    protected `{renderer_handle, sdl_renderer_handle}` typedefs and `_*` fields
In `graphics::SDL2::Texture`:
  deleted:
    `size()` getter (see: base class methods)
  added:
    private `sdlQuery()` method
Added some really, really boring and obvious definitions
Added `Texture` querying