Add render stage for text markup.

src/context/code.rs

@@ -6,11 +6,25 @@ use crate::config::Config;
 use crate::error::CustomError;
 use crate::intermediate::ICode;
 
-use super::macros::rnoop;
+use super::macros::render;
 
 #[derive(Debug, Serialize)]
 #[serde(tag = "type")]
 #[serde(rename = "code")]
-pub(crate) struct RenderCode {}
+pub(crate) struct RenderCode {
+    contents: String,
+}
 
-rnoop!(RenderCode, ICode);
+render!(
+    RenderCode,
+    ICode,
+    original,
+    config,
+    output_directory,
+    output_file,
+    {
+        Ok(RenderCode {
+            contents: original.contents.clone(),
+        })
+    }
+);