Enable IPC API for web (#138054)

* wip: ipc api

* wip: send message ports upfront

* address both inside and outside iframe

* fix build

* relay MessagePort to worker

* address api discussion feedback

* check for proposed api

* fix layer breakage

Co-authored-by: Alex Dima <alexdima@microsoft.com>

build/lib/layersChecker.js

@@ -52,7 +52,9 @@ const CORE_TYPES = [
     'trimEnd',
     'trimLeft',
     'trimRight',
-    'queueMicrotask'
+    'queueMicrotask',
+    'MessageChannel',
+    'MessagePort'
 ];
 // Types that are defined in a common layer but are known to be only
 // available in native environments should not be allowed in browser