feat(28): adding testing packages and sendEmail for confirmation

[404answernotfound]

🔗 Linked issue

#28

• Added a new /emails page where you will find a button to send a confirmation email.
• Sends confirmation email once subscription process is completed (right now not working because of Stripe probably)

❓ Type of change

• 📖 Documentation (updates to the documentation, readme or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[404answernotfound]

I'm not actually receiving emails, but we are sending them.

[TheJoin95]

Please rebase

[404answernotfound]

@TheJoin95 rebased

[TheJoin95]

@404answernotfound please check the CI

[TheJoin95]

Overall looking good, I think we can merge it after the previous comments are going to be resolved, thanks!

[404answernotfound]

Using this PR to also get a start on #29 and #30 which will require admin membership page to be completed before moving forward. This is enough to get us started with making emails work tho, so it's a closing for #28 and a starting point for debugging #29 and #30

To your points @TheJoin95 , we can add env vars

[TheJoin95]

Approving so that after fixing the lint issues you can merge it

[404answernotfound]

Should have fixed linting issue that didn't come with this PR but we can still fix it here