[Upgrade] Upgrade Synthetics to v1.0.0 and migrate code gen from Recorder to Synthetics

[justinkambic]

Summary

Resolves #295.

Resolves #393.

Upgrades the recorder to use v1.0.0 of Synthetics 🎉

Migrates code generation to the synthetics library.

In draft state, code not ready for review.

All checks are passing, this should be ready to review.

Implementation details

Bumps both Synthetics and Playwright to the version used by Synthetics.

Deletes code gen from the recorder and references updated code in Synthetics lib.

How to validate this change

Make sure the recorder works as intended, specifically WRT generated code.

• Download and smoke test the recorder
• Record multiple journeys
• Make sure code export works ok
• Ensure the "test" feature of the recorder is working and instrumenting the browser properly

[justinkambic]

As part of development on this branch, I've added a global.d.ts file to hack around some TypeScript issues with how Synthetics imports the JS language generator from Playwright. This didn't come up in my pre-patch testing before Synthetics v1 was released, but it's happening now that I've imported the actual released package.

I've created a bug issue to track this, we can circle back later and see if we can create a cleaner solution.

[kyungeunni]

This is huge. Thanks, @justinkambic!!
Tested locally, and everything works great for me 🏅

p.s.

YAY to all the deletions!!! 🧹