feat(user): add login template

webapp/templates/user/login.html.twig

+{% extends 'app_base.html.twig' %}
+
+{% block title %} {{ 'login.head.title'|trans }} - {{ appName }}{% endblock %}
+{% block body %}
+
+    <h2>
+        {{ 'login.page.title'|trans }}
+    </h2>
+    {% if error %}
+        <div class="alert alert-warning">{{ error.messageKey|trans(error.messageData, 'security') }}</div>
+    {% endif %}
+
+    <div>
+        <form class="col-md-6" action="{{ path('app_account_login') }}" method="post">
+            <div class="mb-2">
+                <label for="username" class="form-label">
+                    {{ 'login.form.label.account'|trans }}
+                </label>
+                <input type="text" id="username" name="_username"
+                       class="form-control" value="{{ last_username }}">
+            </div>
+
+            <div class="mb-2">
+                <label class="form-label" for="password">
+                    {{ 'login.form.label.password'|trans }}
+                </label>
+                <input class="form-control" type="password" id="password" name="_password">
+            </div>
+            {# If you want to control the URL the user is redirected to on success
+            <input type="hidden" name="_target_path" value="/account"> #}
+
+            <input type="hidden" name="_csrf_token" value="{{ csrf_token('authenticate') }}">
+            <button id="login-form-button-submit" type="submit" class="btn btn-primary">
+                {{ 'login.form.submit'|trans|raw }}
+            </button>
+        </form>
+        <hr class="col-3 col-md-2 mb-5">
+
+        <a id="public_lost-password_link"
+           href="{{ path('app_account_forgot_password_request') }}">
+            {{ 'login.link.forgot_password'|trans }}
+        </a>
+
+    </div>
+{% endblock %}