Creates a new instance of the rust geo/geo-types Polygon/Multipolygon that follows the OGC winding rules.
The rust geo and geo-types crates are not as strict as the OGC guidelines, and allow for polygons with inner and outer rings in any winding order. This trait returns a Polygon/Multipolygon where all outer rings are clockwise, and all inner rings are anti-clockwise.
```rust // Anti-clockwise winding order for outer ring let bad = polygon![ (x: 1.0, y: 1.0), (x: 4.0, y: 1.0), (x: 4.0, y: 4.0), (x: 1.0, y: 4.0), (x: 1.0, y: 1.0), ];
// Clockwise winding order for outer ring let good = polygon![ (x: 1.0, y: 1.0), (x: 1.0, y: 4.0), (x: 4.0, y: 4.0), (x: 4.0, y: 1.0), (x: 1.0, y: 1.0), ];
let norm = bad.normalized();
// norm should have the same points and shape as bad but in the valid winding order
assert_eq!(norm, good);
```