added CommentedOutCode check

Author: AlexHaxe

_data/haxe-checkstyle/haxe-checkstyle_sidebar.yml

@@ -141,6 +141,10 @@ entries:
   - title: Comments
     output: web
     items:
+    - title: Commented Out Code
+      url: /haxe-checkstyle/commentedoutcode.html
+      output: web
+
     - title: Doc Comment Style
       url: /haxe-checkstyle/doccommentstyle.html
       output: web

haxe-checkstyle/commentedoutcode.md

@@ -0,0 +1,17 @@
+---
+title: Commented Out Code
+toc: false
+---
+
+Checks sections of commented out code
+
+### Configuration
+
+```json
+{
+    "type": "CommentedOutCode",
+    "props": {
+        "severity": "INFO"
+    }
+}
+```