feat: Add NPV comparison and distribution charts to reporting

- Implemented NPV comparison chart generation using Plotly in ReportingService.
- Added distribution histogram for Monte Carlo results.
- Updated reporting templates to include new charts and improved layout.
- Created new settings and currencies management pages.
- Enhanced sidebar navigation with dynamic URL handling.
- Improved CSS styles for chart containers and overall layout.
- Added new simulation and theme settings pages with placeholders for future features.

templates/reporting.html

@@ -0,0 +1,23 @@
+{% extends "base.html" %} {% block title %}{{ title }} | CalMiner{% endblock %}
+{% block content %} {% include "partials/reports_header.html" %}
+
+<section class="report-overview">
+  <div class="report-grid">
+    <article class="report-card">
+      <h2>Reporting Dashboard</h2>
+      <p class="muted">Generate and view comprehensive financial reports.</p>
+      <p class="muted">
+        Access project summaries, scenario comparisons, and distribution
+        analysis.
+      </p>
+      <div class="page-actions">
+        <a
+          href="{{ request.url_for('projects.project_list_page') }}"
+          class="button"
+          >View Reports</a
+        >
+      </div>
+    </article>
+  </div>
+</section>
+{% endblock %}