Include the "IncludeGenerated" option in the SDK

closes #1215

Src/CSharpier.Tests/CodeFormatterTests.cs

@@ -98,6 +98,34 @@ public void Format_Should_Use_EndOfLine()
         result.Code.Should().Be("var someVariable = someValue;\r\n");
     }
 
+    [Test]
+    public void Format_Should_Ignore_Generated_Files()
+    {
+        var code = """
+// <auto-generated>
+var someVariable =   someValue;
+""";
+        var result = CodeFormatter.Format(code, new CodeFormatterOptions());
+
+        result.Code.Should().Be(code);
+    }
+
+    [Test]
+    public void Format_Should_Format_Generated_Files()
+    {
+        var code = """
+// <auto-generated>
+var someVariable =   someValue;
+
+""";
+        var result = CodeFormatter.Format(
+            code,
+            new CodeFormatterOptions { IncludeGenerated = true }
+        );
+
+        result.Code.Should().Be(code.Replace(" =   ", " = "));
+    }
+
     [TestCase("\n")]
     [TestCase("\r\n")]
     public void Format_Should_Get_Line_Endings_With_SyntaxTree(string lineEnding)

Src/CSharpier/CodeFormatter.cs

@@ -26,7 +26,8 @@ public static CodeFormatterResult Format(string code, CodeFormatterOptions? opti
                 Width = options.Width,
                 UseTabs = options.IndentStyle == IndentStyle.Tabs,
                 TabWidth = options.IndentSize,
-                EndOfLine = options.EndOfLine
+                EndOfLine = options.EndOfLine,
+                IncludeGenerated = options.IncludeGenerated
             },
             cancellationToken
         );

Src/CSharpier/CodeFormatterOptions.cs

@@ -6,6 +6,7 @@ public class CodeFormatterOptions
     public IndentStyle IndentStyle { get; init; } = IndentStyle.Spaces;
     public int IndentSize { get; init; } = 4;
     public EndOfLine EndOfLine { get; init; } = EndOfLine.Auto;
+    public bool IncludeGenerated { get; init; }
 }
 
 public enum IndentStyle

Src/CSharpier/PublicAPI.Unshipped.txt

@@ -1 +1,2 @@
-
+CSharpier.CodeFormatterOptions.IncludeGenerated.get -> bool
+CSharpier.CodeFormatterOptions.IncludeGenerated.init -> void