Add Light/Dark toggle button and Real time Digital clock at the navbar

[mdnm18]

Hello @VAIBHAVBABELE sir, I'm a contributor for OSCI’25 and would like to work on this issue. Kindly assign it to me. Thank you!

My previous work :-

[VAIBHAVBABELE]

What you want to change in my website? add date and time in footer and light and dark mode in navbar .this project on php