feat: add auto generate tag

Author: EngRajabi

Supernova.Enum.Generators/EnumSourceGenerator.cs

@@ -24,7 +24,8 @@ public void Execute(GeneratorExecutionContext context)
         //            Debugger.Launch();
         //        }
         //#endif
-        context.AddSource($"{SourceGeneratorHelper.AttributeName}Attribute.g.cs", SourceText.From($@"
+        context.AddSource($"{SourceGeneratorHelper.AttributeName}Attribute.g.cs", SourceText.From(
+            $@"// <auto-generated />
 using System;
 using System.CodeDom.Compiler;
 namespace {SourceGeneratorHelper.NameSpace}
@@ -107,14 +108,18 @@ public sealed class {SourceGeneratorHelper.AttributeName}Attribute : Attribute
                 }
             }
 
-            var sourceBuilder = new StringBuilder($@"using System;
+
+            var sourceBuilder = new StringBuilder($@"// <auto-generated />
+using System;
+using System.CodeDom.Compiler;
 using System.Collections.Generic;
 using System.Collections.Immutable;
 namespace {SourceGeneratorHelper.NameSpace}
 {{
     /// <summary>
     /// Provides extension methods for operations related to the <see cref=""global::{symbol.FullName()}"" /> enumeration.
-    /// </summary>
+    /// </summary>    
+    [GeneratedCodeAttribute(""Supernova.Enum.Generators"", null)]
     {symbol.DeclaredAccessibility.ToString("G").ToLower()} static class {symbol.Name}EnumExtensions
     {{");
 
@@ -147,8 +152,8 @@ namespace {SourceGeneratorHelper.NameSpace}
 
             //GetLength
             GetLengthFast(sourceBuilder, symbol, e);
-            
-            
+
+
             //TryParse
             TryParseFast(sourceBuilder, e, symbol);
 
@@ -399,7 +404,7 @@ private static void GetLengthFast(StringBuilder sourceBuilder, ISymbol symbol, E
         }
 ");
     }
-    
+
     private static void TryParseFast(StringBuilder sourceBuilder, EnumDeclarationSyntax e, ISymbol symbol)
     {
         sourceBuilder.Append($@"

Supernova.Enum.Generators/Extensions/SymbolExtensions.cs

@@ -1,5 +1,5 @@
-using System;
-using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis;
+using System;
 
 namespace Supernova.Enum.Generators.Extensions;
 
@@ -18,7 +18,7 @@ public static string FullName(this ISymbol symbol)
         // TODO: Use NamespaceSymbolExtensions.FullName after Merge of #70
         return $"{symbol.ContainingNamespace.FullNamespace()}.{symbol.Name}";
     }
-    
+
     /// <summary>
     /// Gets the full name of the namespace, including parent namespaces.
     /// </summary>