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

templates/registration/register.html.twig

@@ -0,0 +1,17 @@
+{% extends 'backoffice/base.html.twig' %}
+{% block title %}{{ 'Register'|trans }}{% endblock %}
+
+{% block body %}
+    <h3>{{ 'Register'|trans }}</h3>
+
+    {{ form_errors(registrationForm) }}
+
+    {{ form_start(registrationForm) }}
+    {{ form_row(registrationForm.email) }}
+    {{ form_row(registrationForm.plainPassword) }}
+
+    <button type="submit" class="btn btn-primary">Register</button>
+    <a href="{{ path('app_login_login') }}" class="btn btn-link">{{ 'Already have an account? Log in'|trans }}</a>
+
+    {{ form_end(registrationForm) }}
+{% endblock %}