feat: add responsiveness and new options for Add Secret Page

[Dhvani365]

Issue: Provide Responsiveness and more options on "Add secret" Page

Closes #202

Description

• I started with making header(Navbar) and Footer responsive. (Comment is added so that it can be identified in your code)
• Then I have changed password field (Added Show password checkbox) in login and register page (Working fine).
• Then I have added two options on "secrets" page: "Edit Secret" and "Remove Secret" (Works fine when user is logged in and authenticated, otherwise shows error on console).
• I made the secret page responsive.

Summary

• Now website works fine on mobile screen.

Further improvement or faced any issue while using

• Please reflect the issue if you face in my portion of changes.
• I have not changed any existing code.

Video of changes:

• Responsiveness of the website home page: https://github.com/user-attachments/assets/ef4d5a50-b5d7-4a48-9ad3-3ad5be917a06

• Changes on register page( I have not changed UI as other contributors are already working on it): https://github.com/user-attachments/assets/b2331470-51ea-4a2c-8139-229645250e42

• Edit and Delete option: https://github.com/user-attachments/assets/a6ede994-0627-4607-b481-8a1856eebb78

• Edit and Delete option in responsive mode: https://github.com/user-attachments/assets/8c4b0b9f-2ff9-4be4-abcf-6623de794602

• [x] My code adheres to the established style guidelines of the project.

• [x] I have included comments in areas that may be difficult to understand.

• [x] My changes have not introduced any new warnings.

• [x] I have conducted a self-review of my code.

If you want to make further changes and add new things, feel free to approach me for this. Thank You for your time!

[Dhvani365]

Due to time constraint, I was unable to host the website, I have attached related video for testing purpose. Wait to hear from you soon!