feat: Individual page export in Markdown and HTML formats (#80)

* fix maths node

* render default html width

* Add page export module
* with support for html and markdown exports

* Page export UI
* Add PDF print too

* remove unused import

packages/editor-ext/src/lib/image/image.ts

@@ -57,9 +57,9 @@ export const TiptapImage = Image.extend<ImageOptions>({
       },
       width: {
         default: "100%",
-        parseHTML: (element) => element.getAttribute("data-width"),
+        parseHTML: (element) => element.getAttribute("width"),
         renderHTML: (attributes: ImageAttributes) => ({
-          "data-width": attributes.width,
+          width: attributes.width,
         }),
       },
       align: {