Create an intermediate ast node type.

src/intermediate/page.rs

@@ -2,6 +2,7 @@ use std::path::PathBuf;
 
 use crate::error::CustomError;
 
+use super::footnote_definition::IRealFootnoteDefinition;
 use super::registry::Registry;
 use super::IDocumentElement;
 use super::IHeading;
@@ -15,6 +16,8 @@ pub(crate) struct BlogPostPage {
     pub(crate) title: Option<String>,
 
     pub(crate) children: Vec<IDocumentElement>,
+
+    pub(crate) footnotes: Vec<IRealFootnoteDefinition>,
 }
 
 impl BlogPostPage {
@@ -36,10 +39,13 @@ impl BlogPostPage {
             ));
         }
 
+        // TODO: Get footnote definitions
+
         Ok(BlogPostPage {
             path,
             title: get_title(&document),
             children,
+            footnotes: Vec::new(), // TODO
         })
     }