add loader and versioning

Azaion.CommonSecurity/SecurityConstants.cs

@@ -1,4 +1,5 @@
 using Azaion.CommonSecurity.DTO;
+using Newtonsoft.Json;
 
 namespace Azaion.CommonSecurity;
 
@@ -56,4 +57,22 @@ public class SecurityConstants
         }
     };
     #endregion ExternalClientsConfig
+
+    public static InitConfig ReadInitConfig()
+    {
+        try
+        {
+            if (!File.Exists(CONFIG_PATH))
+                throw new FileNotFoundException(CONFIG_PATH);
+            var configStr = File.ReadAllText(CONFIG_PATH);
+            var config = JsonConvert.DeserializeObject<InitConfig>(configStr);
+
+            return config ?? DefaultInitConfig;
+        }
+        catch (Exception e)
+        {
+            Console.WriteLine(e);
+            return DefaultInitConfig;
+        }
+    }
 }