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/table.html

@@ -0,0 +1,37 @@
+{% macro table(class='', zebra=True) %}
+<div class="overflow-x-auto">
+    <table class="table {% if zebra %}table-zebra{% endif %} {{ class }}">
+        {{ caller() }}
+    </table>
+</div>
+{% endmacro %}
+
+{% macro thead() %}
+<thead>
+    {{ caller() }}
+</thead>
+{% endmacro %}
+
+{% macro tbody() %}
+<tbody>
+    {{ caller() }}
+</tbody>
+{% endmacro %}
+
+{% macro tr(class='') %}
+<tr class="{{ class }}">
+    {{ caller() }}
+</tr>
+{% endmacro %}
+
+{% macro th(class='') %}
+<th class="{{ class }}">
+    {{ caller() }}
+</th>
+{% endmacro %}
+
+{% macro td(class='', colspan='', rowspan='') %}
+<td class="{{ class }}" {% if colspan %}colspan="{{ colspan }}"{% endif %} {% if rowspan %}rowspan="{{ rowspan }}"{% endif %}>
+    {{ caller() }}
+</td>
+{% endmacro %}