feat: Add HTML export option (#4056)

* tidy

* Add title to HTML export

* fix: Add compatability for documents without collab state

* Add HTML download option to UI

* docs

* fix nodes that required document to render

* Refactor to allow for styling of HTML export

* div>article for easier programatic content extraction

server/commands/documentLoader.ts

@@ -13,6 +13,7 @@ type Props = {
   id?: string;
   shareId?: string;
   user?: User;
+  includeState?: boolean;
 };
 
 type Result = {
@@ -25,6 +26,7 @@ export default async function loadDocument({
   id,
   shareId,
   user,
+  includeState,
 }: Props): Promise<Result> {
   let document;
   let collection;
@@ -156,6 +158,7 @@ export default async function loadDocument({
     document = await Document.findByPk(id as string, {
       userId: user ? user.id : undefined,
       paranoid: false,
+      includeState,
     });
 
     if (!document) {