Add home dashboard and Mithril rendering support

- Create new home route with comprehensive dashboard statistics
- Implement Mithril rendering support with new `mithril_loader.html` template
- Add new routes for home and test pages in `app.py`
- Create `lib/mithril.py` with Mithril rendering and error handling utilities
- Update dashboard template to use new home route
- Add detailed dashboard view with timer and HTTP function statistics

templates/dashboard/timer_functions/overview.html

@@ -36,6 +36,10 @@
                                 hx-get="{{ url_for('timer.edit', function_id=function.id) }}" hx-target="#container"
                                 hx-swap="innerHTML" hx-push-url="true">
                                 <span class="font-medium text-gray-900">{{ function.name }}</span>
+                                <span
+                                    class="bg-green-100 text-green-800 text-xs font-medium px-2.5 py-0.5 rounded-full">
+                                    {{ function.invocation_count }}
+                                </span>
                                 {% if function.last_run %}
                                 <span class="bg-blue-100 text-blue-800 text-xs font-medium px-2.5 py-0.5 rounded-full">
                                     Last run: {{ function.last_run.strftime('%Y-%m-%d %H:%M') }}