Impl record iframe (#481)

* Impl record iframe

* iframe observe

* temp: add bundle file to git

* update bundle

* update with pick

* update bundle

* fix fragment map remove

* feat: add an option to determine whether to pause CSS animation when playback is paused (#428)

set pauseAnimation to true by default

* fix: elements would lose some states like scroll position because of "virtual parent" optimization (#427)

* fix: elements would lose some state like scroll position because of "virtual parent" optimization

* refactor: the bugfix code

bug: elements would lose some state like scroll position because of "virtual parent" optimization

* fix: an error occured at applyMutation(remove nodes part)

error message:
Uncaught (in promise) DOMException: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node

* pick fixes

* revert ignore file

* re-impl iframe record

* re-impl iframe replay

* code housekeeping

* move multi layer dimension calculation to replay side

* update test cases

* teardown test server

* upgrade rrweb-snapshot with iframe load timeout

Co-authored-by: Lucky Feng <yun.feng@smartx.com>

typings/replay/index.d.ts

@@ -19,6 +19,7 @@ export declare class Replayer {
     private fragmentParentMap;
     private elementStateMap;
     private imageMap;
+    private newDocumentQueue;
     constructor(events: Array<eventWithTime | string>, config?: Partial<playerConfig>);
     on(event: string, handler: Handler): this;
     setConfig(config: Partial<playerConfig>): void;
@@ -36,6 +37,9 @@ export declare class Replayer {
     private handleResize;
     private getCastFn;
     private rebuildFullSnapshot;
+    private insertStyleRules;
+    private attachDocumentToIframe;
+    private collectIframeAndAttachDocument;
     private waitForStylesheetLoad;
     private preloadAllImages;
     private applyIncremental;