feat: Add CostCalculator module with CRUD functionality and frontend integration

- Created new module for CostCalculator with necessary routes and controllers.
- Implemented views for creating, editing, and displaying costs.
- Added form partials for cost input with validation.
- Integrated living status options in the form.
- Developed frontend logic for cost calculation steps with dynamic UI updates.
- Included necessary assets (JS and SCSS) for styling and functionality.
- Updated constants for living status options.
- Enhanced existing client-side cost calculator page with new features.

Modules/CostCalculator/module.json

@@ -0,0 +1,11 @@
+{
+    "name": "CostCalculator",
+    "alias": "costcalculator",
+    "description": "",
+    "keywords": [],
+    "priority": 0,
+    "providers": [
+        "Modules\\CostCalculator\\Providers\\CostCalculatorServiceProvider"
+    ],
+    "files": []
+}