Add wallet balance to User model and implement Atoll/Island management

- Added `wallet_balance` field to the User model.
- Updated UserAdmin to include `wallet_balance` in the admin interface.
- Created serializers and views for Atoll and Island management.
- Implemented endpoints for listing, creating, and updating Atolls and Islands.
- Enhanced payment processing with UUIDs for Payment and Topup models.
- Added migration files for new fields and constraints.
- Improved error handling and validation in various views.
- Updated email templates for better responsiveness and SEO.

api/urls.py

@@ -11,6 +11,10 @@ from .views import (
     UserDetailAPIView,
     healthcheck,
     test_email,
+    ListCreateAtollView,
+    RetrieveUpdateDestroyAtollView,
+    ListCreateIslandView,
+    RetrieveUpdateDestroyIslandView,
 )
 
 
@@ -26,5 +30,16 @@ urlpatterns = [
     path("users/<int:pk>/", UserDetailAPIView.as_view(), name="user-detail"),
     path("healthcheck/", healthcheck, name="healthcheck"),
     path("test/", test_email, name="testemail"),
-
+    path("atolls/", ListCreateAtollView.as_view(), name="atolls"),
+    path(
+        "atolls/<int:pk>/",
+        RetrieveUpdateDestroyAtollView.as_view(),
+        name="atoll-detail",
+    ),
+    path("islands/", ListCreateIslandView.as_view(), name="islands"),
+    path(
+        "islands/<int:pk>/",
+        RetrieveUpdateDestroyIslandView.as_view(),
+        name="island-detail",
+    ),
 ]