added syntax highlighting config

src/zona/config.py

@@ -19,15 +19,24 @@ class BlogConfig:
     dir: str = "blog"
 
 
+@dataclass
+class HighlightingConfig:
+    enabled: bool = True
+    theme: str = "ashen"
+    wrap: bool = False
+
+
 @dataclass
 class MarkdownConfig:
     image_labels: bool = True
+    syntax_highlighting: HighlightingConfig = field(
+        default_factory=HighlightingConfig
+    )
 
 
 @dataclass
 class ThemeConfig:
     name: str = "default"
-    syntax_highlighting: bool = True
 
 
 @dataclass