Remove unused SQL queries and update email template handling

- Deleted multiple unused SQL query files from the cms-service.
- Refactored email template handling in the cms-service to improve clarity and maintainability.
- Updated environment variable loading in both cms-service and lms-service to use dotenvy for better configuration management.
- Added a new .env.dev file for local development with database and SMTP configurations.
- Set default value for `certificates_enabled` in the shared common models.

docker-compose.local.yml

@@ -17,14 +17,26 @@ services:
 
   db:
     ports:
-      - "5433:5432"
+      - "5432:5432"
 
   studio:
     ports:
       - "3000:3000"
       - "3001:3001"
+    env_file: .env.dev
+    environment:
+      - NEXT_PUBLIC_CMS_API_URL=http://localhost:3001
+      - NEXT_PUBLIC_LMS_API_URL=http://localhost:3002/lms-api
+      - NEXT_PUBLIC_STUDIO_DOMAIN=localhost
+      - NEXT_PUBLIC_LEARNING_DOMAIN=localhost
 
   experience:
     ports:
       - "3003:3003"
       - "3002:3002"
+    env_file: .env.dev
+    environment:
+      - NEXT_PUBLIC_CMS_API_URL=http://localhost:3001
+      - NEXT_PUBLIC_LMS_API_URL=http://localhost:3002/lms-api
+      - NEXT_PUBLIC_STUDIO_DOMAIN=localhost
+      - NEXT_PUBLIC_LEARNING_DOMAIN=localhost