Upgrade to .NET 10 and migrate to Zitadel V2 API

- Updated all projects to target .NET 10.0 for compatibility with the latest features.
- Migrated Zitadel API integration to V2, updating types, endpoints, and validation logic.
- Refactored DTOs and models for better modularity and maintainability.
- Enhanced OpenAPI documentation using `AddOpenApiOperationTransformer` and `JsonSerializer`.
- Simplified analytics architecture by removing per-tenant orchestrator management.
- Improved sender ID and batch processing endpoints with new DTOs and administrative operations.
- Updated SQL migration scripts for idempotency and compatibility.
- Integrated `IdentityCore` and Zitadel for robust authentication and authorization.
- Removed legacy code, reducing technical debt and improving codebase clarity.
- Updated Dockerfile and project dependencies to align with .NET 10.

Author: alfkonee

JamaaTech.SMPP.Net.Lib/DataCoding.cs

@@ -14,6 +14,7 @@
  *
  ************************************************************************/
 
+using System.Text;
 using JamaaTech.Smpp.Net.Lib.Protocol;
 
 namespace JamaaTech.Smpp.Net.Lib;
@@ -27,7 +28,7 @@ namespace JamaaTech.Smpp.Net.Lib;
 /// should also contain one of the enumeration members which can be used to choose appropiate scheme to decode the message.
 /// Note that, in this implementation only the SMSCDefault, ASCII, Latin1 and UCS2 encodings are supported.
 /// </remarks>
-/// <seealso cref="JamaaTech.Smpp.Net.Lib.Encoding.SmppEncoding"/>
+/// <seealso cref="Encoding.SmppEncoding"/>
 [Flags()]
 public enum DataCoding : byte
 {