[Feature] Add event related backend controllers

[NOOB-3301]

Description

I want to add event related controllers, like add event, get events, delete event.

Screenshots

No response

Checklist

• I have checked the existing issues.
• I follow Contributing Guidelines of this project.
• I am an IWOC'25 contributor.

Code of Conduct

• I agree to follow this project's "Code of Conduct".

[github-actions]

Hey @NOOB-3301, Welcome to the project Eventica! 🎊
Thanks for opening an issue! 🙌 Please wait for the issue to be assigned. Happy Coding!! ✨

[Rakesh9100]

Go ahead @NOOB-3301

[github-actions]

Hello @NOOB-3301! Your issue #101 has been closed. Thank you for your contribution!! 🙌