Merge pull request #52 from vcsjones/misx-file-extensions

Add support for MSIX file extensions

Author: vcsjones

src/AzureSign.Core/SipExtensionFactory.cs

@@ -30,6 +30,22 @@ public static SipKind GetSipKind(ReadOnlySpan<char> filePath)
             {
                 return SipKind.Appx;
             }
+            if (extension.Equals(".msix", StringComparison.OrdinalIgnoreCase))
+            {
+                return SipKind.Appx;
+            }
+            if (extension.Equals(".emsix", StringComparison.OrdinalIgnoreCase))
+            {
+                return SipKind.Appx;
+            }
+            if (extension.Equals(".msixbundle", StringComparison.OrdinalIgnoreCase))
+            {
+                return SipKind.Appx;
+            }
+            if (extension.Equals(".emsixbundle", StringComparison.OrdinalIgnoreCase))
+            {
+                return SipKind.Appx;
+            }
             return SipKind.None;
         }
     }