Add helper method to register the webp format

src/ImageSharp/Configuration.cs

@@ -6,6 +6,7 @@ using System.Collections.Concurrent;
 using System.Collections.Generic;
 using SixLabors.ImageSharp.Formats;
 using SixLabors.ImageSharp.Formats.Bmp;
+using SixLabors.ImageSharp.Formats.Experimental.Webp;
 using SixLabors.ImageSharp.Formats.Gif;
 using SixLabors.ImageSharp.Formats.Jpeg;
 using SixLabors.ImageSharp.Formats.Png;
@@ -173,6 +174,17 @@ namespace SixLabors.ImageSharp
             };
         }
 
+        /// <summary>
+        /// Registers the webp format detector, encoder and decoder.
+        /// </summary>
+        public void AddWebp()
+        {
+            this.ImageFormatsManager.AddImageFormat(WebpFormat.Instance);
+            this.ImageFormatsManager.AddImageFormatDetector(new WebpImageFormatDetector());
+            this.ImageFormatsManager.SetDecoder(WebpFormat.Instance, new WebpDecoder());
+            this.ImageFormatsManager.SetEncoder(WebpFormat.Instance, new WebpEncoder());
+        }
+
         /// <summary>
         /// Creates the default instance with the following <see cref="IConfigurationModule"/>s preregistered:
         /// <see cref="PngConfigurationModule"/>

tests/ImageSharp.Tests/Formats/WebP/ImageExtensionsTest.cs

@@ -18,10 +18,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Webp
         public ImageExtensionsTest()
         {
             this.configuration = new Configuration();
-            this.configuration.ImageFormatsManager.AddImageFormat(WebpFormat.Instance);
-            this.configuration.ImageFormatsManager.AddImageFormatDetector(new WebpImageFormatDetector());
-            this.configuration.ImageFormatsManager.SetDecoder(WebpFormat.Instance, new WebpDecoder());
-            this.configuration.ImageFormatsManager.SetEncoder(WebpFormat.Instance, new WebpEncoder());
+            this.configuration.AddWebp();
         }
 
         [Fact]

tests/ImageSharp.Tests/Formats/WebP/WebPDecoderTests.cs

@@ -26,9 +26,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Webp
         public WebpDecoderTests()
         {
             this.configuration = new Configuration();
-            this.configuration.ImageFormatsManager.AddImageFormat(WebpFormat.Instance);
-            this.configuration.ImageFormatsManager.AddImageFormatDetector(new WebpImageFormatDetector());
-            this.configuration.ImageFormatsManager.SetDecoder(WebpFormat.Instance, new WebpDecoder());
+            this.configuration.AddWebp();
         }
 
         [Theory]