Add domain management, reports, settings, and upload templates

- Implemented domain management page with a list of monitored domains and their DMARC, SPF, and DKIM statuses.
- Created reports page with filtering options for domain, report type, and date range, displaying DMARC reports.
- Developed settings page for IMAP configuration and DMARC policy management, including form validation and feedback.
- Added upload page for DMARC report files with drag-and-drop functionality and file type validation.
- Integrated Alpine.js for interactivity and dynamic data handling across all templates.

backend/app/templates/components/ui/card.html

@@ -0,0 +1,35 @@
+{% macro card() %}
+<div class="card bg-base-100 shadow">
+    {{ caller() }}
+</div>
+{% endmacro %}
+
+{% macro card_header() %}
+<div class="card-body pt-6 pb-2">
+    {{ caller() }}
+</div>
+{% endmacro %}
+
+{% macro card_title(text='') %}
+<h3 class="card-title text-lg font-bold">
+    {% if text %}{{ text }}{% else %}{{ caller() }}{% endif %}
+</h3>
+{% endmacro %}
+
+{% macro card_description(text='') %}
+<p class="text-sm opacity-70 mt-1">
+    {% if text %}{{ text }}{% else %}{{ caller() }}{% endif %}
+</p>
+{% endmacro %}
+
+{% macro card_content() %}
+<div class="card-body py-4">
+    {{ caller() }}
+</div>
+{% endmacro %}
+
+{% macro card_footer() %}
+<div class="card-actions justify-end p-4 pt-0">
+    {{ caller() }}
+</div>
+{% endmacro %}