feat: Add new events to webhook BOOKING_CONFIRMED, BOOKING_REJECTED

[shivamklr]

What does this PR do?

• Fixes #7299, except BOOKING_PAID, webhook which already is in a PR here #8721
• Adds support for BOOKING_REQUESTED and BOOKING_REJECTED webhook in the code.
• Tests BOOKING_REQUESTED and BOOKING_REJECTED webhooks with playwright

Loom Video Demo

Environment: Staging(main branch) / Production

Type of change

• New feature (non-breaking change which adds functionality)
• A bit of Refactoring
• This change requires a documentation update

How should this be tested?

• [x] Test webhook.e2e.ts with playwright

Checklist

• ~~I haven't read the contributing guide~~
• ~~My code doesn't follow the style guidelines of this project~~
• ~~I haven't performed a self-review of my own code and corrected any misspellings~~
• ~~I haven't commented my code, particularly in hard-to-understand areas~~
• ~~I haven't checked if my PR needs changes to the documentation~~
• ~~I haven't checked if my changes generate no new warnings~~
• ~~I haven't added tests that prove my fix is effective or that my feature works~~
• ~~I haven't checked if new and existing unit tests pass locally with my changes~~

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This PR introduced no changes to the JavaScript bundle! 🙌

[shivamklr]

Thanks for your review @joeauyeung. I am new to the codebase and really appreciate your assitance with the code review here.

[shivamklr]

@CarinaWolli Thanks for the review 🙂

[PeerRich]

@CarinaWolli @joeauyeung can you rereview?