feat: Enhance project and reservation management

- Updated reservation list to display estimated units and improved count display.
- Added "Upcoming" status to project dashboard and header with corresponding styles.
- Implemented a dropdown for quick status updates in project header.
- Modified project list compact view to reflect new status labels.
- Updated project overview to include a tab for upcoming projects.
- Added migration script to introduce estimated_units column in job_reservations table.

templates/base.html

@@ -155,7 +155,7 @@
                     <svg class="w-5 h-5 mr-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                         <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 7V3m8 4V3m-9 8h10M5 21h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v12a2 2 0 002 2z"></path>
                     </svg>
-                    Reservation Planner
+                    Job Planner
                 </a>
 
                 <a href="/settings" class="flex items-center px-4 py-3 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 {% if request.url.path == '/settings' %}bg-gray-100 dark:bg-gray-700{% endif %}">