feat(auth): implement secure email verification and password reset flows

[shamoo53]

📌 Pull Request Title

Description

i implemented:
New Entities:
EmailVerification: Stores email verification tokens
PasswordReset: Stores password reset tokens
New DTOs:
VerifyEmailDto and RequestEmailVerificationDto
ForgotPasswordDto and ResetPasswordDto
New Service:
EmailService: Handles sending verification and reset emails
Enhanced AuthService with new methods:
requestEmailVerification: Generates and sends verification email
verifyEmail: Verifies email token
forgotPassword: Initiates password reset
resetPassword: Resets password with token
New Endpoints in AuthController:
POST /auth/request-verification: Request email verification
POST /auth/verify-email: Verify email with token
POST /auth/forgot-password: Request password reset
POST /auth/reset-password: Reset password with token
Security Features:
Token expiration handling
Token reuse prevention
Secure password hashing
Email verification status tracking
Rate limiting (through NestJS guards)

Related Issues

Changes Made

• List key changes made in this PR.
• created New Entities:
• Enhanced AuthService with new methods:
• New Endpoints in AuthController:

How to Test

Screenshots (if applicable)

Checklist

• My code follows the project's coding style.
• I have tested these changes locally.
• Documentation has been updated where necessary.

[portableDD]

good job

please resolve conflict

[portableDD]

LGTM