Async API Rollout

[inancgumus]

Tasks

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1. Migrate the Async API into k6-browser main #1374
   async +1
   
2. k6-core compatibility: Use the Goja fork called Sobek #1377
   compatibility refactor +2
   
3. k6-core update for k6 browser version 2's sync API k6#3782
   area: browser +1
   
4. Browser: Register sync and async JS APIs (k6-core side) k6#3778
   area: browser +1
   
5. Graduate to k6/browser from an experimental module k6#3793
   area: browser +1
   
6. Update k6-docs to use k6/browser instead of k6/browser/experimental (Move to non-experimental browser k6-docs#1626)
7. Release k6-browser v2.0.0 (v1.6.0 due to go mod)
8. Browser: Migrate the Async API docs into main k6-docs#1612
   Area: browser +1
   
9. Browser: Migrate the Async API Typescript definitions into release-v0.52.0 k6-DefinitelyTyped#50
   browser +1
   
10. Update k6-definitelyTyped to also use k6/browser in addition to k6/browser/experimental @allansson