[Feature] Add Sign In and Sign Up Buttons to Navigation Header

[subodhkangale07]

Is your feature request related to a problem? Please describe.
Currently, there are no visible sign-in or sign-up buttons in the navigation header of the hiring portal. This makes it difficult for users to access authentication features and creates a poor user experience for both new and returning users who need to access their accounts.

Describe the solution you'd like
Add two prominent buttons to the navigation header:

• A "Sign In" button for returning users
• A "Sign Up" button for new users who need to create an account

The buttons should:

• Be clearly visible in the top navigation bar
• Follow the portal's existing design system
• Have appropriate hover/focus states for accessibility
• Link to their respective authentication forms/pages

Additional context
This is a fundamental feature for any user authentication system and will improve:

• User experience
• Accessibility to account features
• Clear pathways for new user registration
• Overall portal functionality

[subodhkangale07]

/assign kindly assign this issue to me

[Ashutoshdas-dev]

@Yashgabani845 i will like to work on it olease assign it to me

[subodhkangale07]

@Yashgabani845 please assign this issue to me , I like to contribute in this , issue is raised by me