Add support for code blocks (#35)

* Add support for code blocks

* Update src/models.rs

Co-authored-by: Jake Swenson <jakeswenson@users.noreply.github.com>

src/models.rs

@@ -228,6 +228,12 @@ pub struct ChildPageFields {
     pub title: String,
 }
 
+#[derive(Serialize, Deserialize, Debug, Eq, PartialEq, Clone)]
+pub struct CodeFields {
+    pub text: Vec<RichText>,
+    pub language: String,
+}
+
 #[derive(Serialize, Deserialize, Debug, Eq, PartialEq, Clone)]
 #[serde(tag = "type")]
 #[serde(rename_all = "snake_case")]
@@ -280,6 +286,11 @@ pub enum Block {
         common: BlockCommon,
         child_page: ChildPageFields,
     },
+    Code {
+        #[serde(flatten)]
+        common: BlockCommon,
+        code: CodeFields,
+    },
     #[serde(other)]
     Unsupported,
 }
@@ -296,7 +307,8 @@ impl AsIdentifier<BlockId> for Block {
             | NumberedListItem { common, .. }
             | ToDo { common, .. }
             | Toggle { common, .. }
-            | ChildPage { common, .. } => &common.id,
+            | ChildPage { common, .. }
+            | Code { common, .. } => &common.id,
             Unsupported {} => {
                 panic!("Trying to reference identifier for unsupported block!")
             }