[API Proposal]: Add API for enumerating installed codecs

### Background and motivation

If an Out-Box type WIC codec such as WebP or AVIF is installed, the `System.Windows.Media.Imaging.BitmapDecoder.Create()` method can be used to process the image.
However, it is not possible to retrieve information such as the extension of the installed codec from the WPF application.
As a result, the application cannot indicate to the user that these codecs are available, for example, in the `OpenFileDialog`.

Therefore, we require an API that can retrieve information about all installed codecs.

### API Proposal

```diff
namespace System.Windows.Media.Imaging;

public abstract class BitmapCodecInfo {
// wrapper for IWICImagingFactory::CreateComponentEnumerator(WICDecoder)
+ public static IEnumerable GetInstalledDecoderInfos();

// wrapper for IWICImagingFactory::CreateComponentEnumerator(WICEncoder)
+ public static IEnumerable GetInstalledEncoderInfos();
}
```

### API Usage

```csharp
Console.WriteLine("You can decode the following formats");

foreach (BitmapCodecInfo codecInfo in BitmapCodecInfo.GetInstalledDecoderInfos())
{
Console.WriteLine(codecInfo.FileExtensions);
}
```

### Alternative Designs
Provide classes derived from `BitmapCodecInfo` for Encoder and Decoder.
```diff
namespace System.Windows.Media.Imaging;

+public class BitmapDecoderInfo : BitmapCodecInfo {
+ public static IEnumerable GetInstalledDecoders();
+ public BitmapDecoder CreateDecoder();
+}
+public class BitmapEncoderInfo : BitmapCodecInfo {
+ public static IEnumerable GetInstalledEncoders();
+ public BitmapEncoder CreateEncoder();
+}
```

### Risks

_No response_