feat: implement email verification and password reset features

- Add EmailTokenService for handling email verification and password reset tokens.
- Create EmailService for sending verification and reset emails via SMTP.
- Update AuthService to handle email verification status during login.
- Modify user registration to redirect to a check email screen instead of issuing a token.
- Implement resend verification email functionality.
- Add deep link handling for email verification and password reset in the mobile app.
- Update mobile app routes and components to support new email verification flow.
- Enhance error handling for unverified emails during login attempts.
- Update configuration to include SMTP settings for email service.

backend/migrations/20240101000004_create_token_tables.sql

@@ -0,0 +1,19 @@
+CREATE TABLE password_reset_tokens (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    token TEXT NOT NULL UNIQUE,
+    used_at TIMESTAMPTZ,
+    expires_at TIMESTAMPTZ NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+CREATE INDEX ON password_reset_tokens (token);
+
+CREATE TABLE email_verification_tokens (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    token TEXT NOT NULL UNIQUE,
+    used_at TIMESTAMPTZ,
+    expires_at TIMESTAMPTZ NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+CREATE INDEX ON email_verification_tokens (token);