feat: Add show/hide password visibility toggle to the sign-in form

[Vaanshimadaan]

Overview

This PR addresses the missing password visibility feature on the sign-in page. Users can now easily toggle between showing and hiding their password to avoid typos before logging in.

Changes Made

• State Management: Added showPassword state in Login.jsx to handle dynamic input type switching.
• UI Update: Replaced the static password input field with a dynamic one that switches type between password and text.
• Icons: Integrated Eye and EyeOff icons from lucide-react directly inside the input container for a clean, modern look.
• Accessibility: Ensured proper alignment and layout spacing using Tailwind CSS utilities.

Closes

Closes #131

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