Add back server example env

Author: carrrmenleong

server/.env.example

@@ -0,0 +1,17 @@
+APP_NAME=DjangoAPI
+
+APP_ENV=DEVELOPMENT
+API_SECRET_KEY="supersecretkey"
+API_ALLOWED_HOSTS=".localhost 127.0.0.1 [::1]"
+
+POSTGRES_HOST=localhost
+POSTGRES_NAME=postgres
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=password
+POSTGRES_PORT=5432
+
+DJANGO_SUPERUSER_PASSWORD=Password123
+DJANGO_SUPERUSER_EMAIL=admin@test.com
+DJANGO_SUPERUSER_USERNAME=admin
+
+FRONTEND_URL="http://localhost:3000"