Add user auth, personal cabinet, admin panel and first admin bootstrap

Co-authored-by: Cursor <cursoragent@cursor.com>

app/templates/admin/photos.html

@@ -0,0 +1,22 @@
+{% extends "base.html" %}
+
+{% block title %}Фото — Админка{% endblock %}
+
+{% block content %}
+<section class="page-header page-header--admin">
+    <div class="container">
+        <h1 class="page-header__title">Все фотографии</h1>
+    </div>
+</section>
+
+<section class="admin-section">
+    <div class="container">
+        {% include "admin/_nav.html" %}
+        {% include "partials/alerts.html" %}
+
+        {% with photos=photos, show_owner=true, delete_mode='admin', empty_title='Нет фотографий', empty_text='Пользователи ещё не загружали фото' %}
+        {% include "partials/photo_gallery.html" %}
+        {% endwith %}
+    </div>
+</section>
+{% endblock %}