feat(infra): new doc sync engine (#6205)

https://github.com/toeverything/AFFiNE/blob/eyhn/feat/new-sync/packages/common/infra/src/workspace/engine/doc/README.md

packages/frontend/web/src/index.tsx

@@ -1,3 +1,4 @@
+import './polyfill/dispose';
 import './polyfill/intl-segmenter';
 import './polyfill/request-idle-callback';
 import './polyfill/resize-observer';

packages/frontend/web/src/polyfill/dispose.ts

@@ -0,0 +1,2 @@
+import 'core-js/modules/esnext.symbol.async-dispose';
+import 'core-js/modules/esnext.symbol.dispose';