Add DiagnosticId to the format report

Author: JoeRobich

src/Analyzers/AnalyzerFormatter.cs

@@ -162,7 +162,7 @@ static void LogDiagnosticLocations(Solution solution, IEnumerable<Diagnostic> di
                         logger.LogDiagnosticIssue(document, diagnosticPosition, diagnostic, changesAreErrors);
                     }
 
-                    formattedFiles.Add(new FormattedFile(document, new[] { new FileChange(diagnosticPosition, $"{diagnostic.Severity.ToString().ToLower()} {diagnostic.Id}: {diagnostic.GetMessage()}") }));
+                    formattedFiles.Add(new FormattedFile(document, new[] { new FileChange(diagnosticPosition, diagnostic.Id, $"{diagnostic.Severity.ToString().ToLower()} {diagnostic.Id}: {diagnostic.GetMessage()}") }));
                 }
             }
         }

src/FileChange.cs

@@ -10,13 +10,16 @@ public class FileChange
 
         public int CharNumber { get; }
 
+        public string DiagnosticId { get; }
+
         public string FormatDescription { get; }
 
-        public FileChange(LinePosition changePosition, string formatDescription)
+        public FileChange(LinePosition changePosition, string diagnosticId, string formatDescription)
         {
             // LinePosition is zero based so we need to increment to report numbers people expect.
             LineNumber = changePosition.Line + 1;
             CharNumber = changePosition.Character + 1;
+            DiagnosticId = diagnosticId;
             FormatDescription = formatDescription;
         }
     }

src/Formatters/DocumentFormatter.cs

@@ -168,7 +168,7 @@ private ImmutableArray<FileChange> GetFileChanges(FormatOptions formatOptions, D
 
                 var changePosition = originalText.Lines.GetLinePosition(change.Span.Start);
 
-                var fileChange = new FileChange(changePosition, $"{FormatWarningDescription}{changeMessage}");
+                var fileChange = new FileChange(changePosition, Name, $"{FormatWarningDescription}{changeMessage}");
                 fileChanges.Add(fileChange);
 
                 if (!formatOptions.SaveFormattedFiles || formatOptions.LogLevel == LogLevel.Debug)