feat: add password strength indicator in profile settings

[akshatsinghai6682-sketch]

📌 Description

Added a real-time password strength indicator on the Signup page. The feature evaluates the entered password and displays its strength (Weak, Medium, Strong) along with password requirements to guide users while creating secure passwords.

The password requirements displayed are:

• At least 8 characters
• At least 1 uppercase letter
• At least 1 lowercase letter
• At least 1 number
• At least 1 special character

🔗 Related Issue

Closes #1621

🛠 Changes Made

• Added password strength evaluation logic.
• Added a real-time strength indicator (Weak/Medium/Strong).
• Added password requirement guidelines:
  • Minimum 8 characters
  • 1 uppercase letter
  • 1 lowercase letter
  • 1 number
  • 1 special character
• Added color-coded feedback based on password strength.

📸 Screenshots (if applicable)

Added screenshots demonstrating Weak, Medium, and Strong password states.

🚀 Notes for Reviewers

The password strength indicator updates dynamically as the user types and provides immediate guidance on password requirements, improving the signup experience and encouraging stronger passwords.

[akshatsinghai6682-sketch]

hi @aryandas2911 please review the pr whenever possible