Day 3 - Added Security, Authentication and Jwt...

I restarted my coding journey with a simple rule: Improve 1% every day. The features I worked on today include: Pagination Request Validation Spring Security JWT Authentication Pagination in the Task API Earlier, my API returned all tasks at once. That works when the data is small, but in real applications the database can contain thousands of records. So I added pagination to the API. Now tasks can be fetched page by page instead of loading everything in one response. This improves performance