Add Missing Sign In/Up Options from Original Architecture and Figma Design

[mahinuzzaman]

Implement the missing sign-in and sign-up options that were part of the original architecture and Figma design. This includes ensuring the UI is consistent with the Figma design and functionality is aligned with the intended user flow.

Acceptance Criteria:

• Identify missing sign-in and sign-up options from the original architecture and Figma design.
• Implement the missing options in the UI and backend
• Ensure UI components are styled to match the Figma design.
• Add necessary form validation for sign-in and sign-up processes.
• Implement any required API calls for sign-in and sign-up.
• Test the sign-in and sign-up flows to ensure they work as expected.