chore: Transactional emails to React email

[Dhruwang]

What does this PR do?

Transactional emails -> React email

Fixes 1869

How should this be tested?

Test emails

Checklist

Required

• Filled out the "How to test" section in this PR
• Read How we Code at Formbricks
• Self-reviewed my own code
• Commented on my code in hard-to-understand bits
• Ran pnpm build
• Checked for warnings, there are none
• Removed all console.logs
• Merged the latest changes from main onto my branch with git pull origin main
• My changes don't cause any responsiveness issues

Appreciated

• If a UI change was made: Added a screen recording or screenshots to this PR
• Updated the Formbricks Docs if changes were necessary

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

2 Ignored Deployments

Name	Status	Preview	Comments	Updated (UTC)
formbricks-cloud	⬜️ Ignored (Inspect)	Visit Preview		Apr 25, 2024 0:52am
formbricks-com	⬜️ Ignored (Inspect)	Visit Preview		Apr 25, 2024 0:52am

[github-actions]

Thank you for following the naming conventions for pull request titles! 🙏

[gupta-piyush19]

@Dhruwang Thanks for the PR and the refactoring. The feature works really well. 🚀 
I have just added a few minor comments. Please check them out; after that, we're good to merge this.

[gupta-piyush19]

LGTM! 🚀

[mattinannt]

@Dhruwang Thanks for the PR :-) Looks great!
Still there are a few structural things I would like to get changed before we can merge this :-)

[mattinannt]

@Dhruwang Looks good! I love the modularity with our new email package :-) 🚀 I just made a few changes to the types for more consistency. If we have a types file weeklySummary.ts then all the types should also start with ZWeeklySummary... :-) And for every zod type we should also export a typescript type :-)