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

package.json

@@ -12,7 +12,7 @@
     "build": "yarn clean && yarn build:webpack && yarn build:i18n && yarn build:server",
     "start": "node ./build/server/index.js",
     "dev": "NODE_ENV=development yarn concurrently -n api,collaboration  -c \"blue,magenta\" \"node --inspect=0.0.0.0 build/server/index.js --services=collaboration,websockets,admin,web,worker\"",
-    "dev:watch": "nodemon --exec \"yarn build:server && yarn dev\" -e js,ts --ignore build/ --ignore app/ --ignore shared/editor",
+    "dev:watch": "nodemon --exec \"yarn build:server && yarn dev\" -e js,ts,tsx --ignore build/ --ignore app/ --ignore shared/editor",
     "lint": "eslint app server shared",
     "deploy": "git push heroku master",
     "prepare": "husky install",
@@ -108,6 +108,7 @@
     "invariant": "^2.2.4",
     "ioredis": "^4.28.5",
     "is-printable-key-event": "^1.0.0",
+    "jsdom": "^20.0.0",
     "json-loader": "0.5.4",
     "jsonwebtoken": "^8.5.0",
     "jszip": "^3.10.0",