escape hatch back to index from stream

Author: thefringeninja

src/SqlStreamStore.HAL/Resources/StreamResource.cs

@@ -75,6 +75,7 @@ public async Task<Response> GetPage(ReadStreamOperation operation, CancellationT
                     .AddLinks(Links.Navigation(page, operation))
                     .AddLinks(Links.Feed(operation))
                     .AddLinks(Links.Metadata(operation))
+                    .AddLinks(Links.Index())
                     .AddEmbeddedResource(
                         Constants.Relations.AppendToStream,
                         Schemas.AppendToStream)
@@ -181,6 +182,11 @@ public static Link Metadata(ReadStreamOperation operation)
                     Constants.Relations.Metadata,
                     $"{operation.StreamId}/metadata");
 
+            public static Link Index()
+                => new Link(
+                    Constants.Relations.Index,
+                    "..");
+
             public static IEnumerable<Link> Navigation(ReadStreamPage page, ReadStreamOperation operation)
             {
                 var first = First(page, operation);