feat(swagger): Configure Swagger settings in appsettings.json

- Add SwaggerSettings section with EnableInProduction: true
- Title: DocumentOperator API
- Version: v1
- Description: PDF document processing service using DevExpress
- Production Swagger enabled by default

DocumentOperator.API/appsettings.json

@@ -11,6 +11,13 @@
     "LogDirectory": "E:\\LogFiles\\Digital Data\\DocumentOperator.API"
   },
 
+  "SwaggerSettings": {
+    "EnableInProduction": true,
+    "Title": "DocumentOperator API",
+    "Version": "v1",
+    "Description": "PDF document processing service using DevExpress"
+  },
+
   "Serilog": {
     "MinimumLevel": {
       "Default": "Information",