calendar added

[Pritam12F]

PR Fixes:

• 1 #845

Resolves #845

Feature: A calendar that tracks all the videos uploaded on a day to day basis

I have used react-big-calendar to implement the feature as it allows for custom styling. I have used server actions to get the content details from the DB instead of api routes. Need some work to do on the CSS of it if custom styling is required. Let me know what else I should add

Video of it in action:

https://github.com/user-attachments/assets/719f74ef-23d2-4abc-996e-f8d2fb2b6704

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [x] I assure there is no similar/duplicate pull request regarding same issue

[Pritam12F]

@siinghd Could you please take a look at this PR when you have a chance? I'd appreciate your feedback on it