Implement email verification feature, add registration form, and update user entity for verification status

compose.override.yaml

@@ -8,13 +8,12 @@ services:
       - ./:/app
       - ./frankenphp/Caddyfile:/etc/caddy/Caddyfile:ro
       - ./frankenphp/conf.d/20-app.dev.ini:/usr/local/etc/php/app.conf.d/20-app.dev.ini:ro
-      # If you develop on Mac or Windows you can remove the vendor/ directory
-      #  from the bind-mount for better performance by enabling the next line:
-      #- /app/vendor
+      - ./frankenphp/data:/data
     environment:
       MERCURE_EXTRA_DIRECTIVES: demo
       # See https://xdebug.org/docs/all_settings#mode
       XDEBUG_MODE: "${XDEBUG_MODE:-off}"
+      MAILER_DSN: "smtp://mailer:1025"
     extra_hosts:
       # Ensure that host.docker.internal is correctly defined on Linux
       - host.docker.internal:host-gateway
@@ -27,4 +26,15 @@ services:
   database:
     ports:
       - "5432:5432"
-###< doctrine/doctrine-bundle ###
+  ###< doctrine/doctrine-bundle ###
+  
+  ###> symfony/mailer ###
+  mailer:
+    image: axllent/mailpit
+    ports:
+      - "1025"
+      - "8025"
+    environment:
+      MP_SMTP_AUTH_ACCEPT_ANY: 1
+      MP_SMTP_AUTH_ALLOW_INSECURE: 1
+  ###< symfony/mailer ###