Feat:Implement Auto-Save for Code

### Describe the feature

Add an auto-save feature that saves code input periodically, allowing users to recover their progress if they leave and return.

### Add ScreenShots

Requirements:
Implement a function to save the code in localStorage every few seconds or after a pause in typing.
Retrieve and display saved code from localStorage when the page loads.
Include an indicator to show when the code is being saved.

### Record

- [X] I agree to follow this project's Code of Conduct
- [X] I'm a GSSOC'24 contributor
- [X] I want to work on this issue