feat: Perfect C# structure alignment with VC2022 for exact debugging

Major architectural refactoring to achieve 1:1 structural compatibility:

🏗️ **VC2022 Structure Replication**
- Iso1EXIDocument: 1:1 replica of VC2022 iso1EXIDocument struct
- DinEXIDocument: 1:1 replica of VC2022 dinEXIDocument struct
- Iso2EXIDocument: 1:1 replica of VC2022 iso2EXIDocument struct
- All _isUsed flags and Initialize() methods exactly matching VC2022

🔄 **VC2022 Function Porting**
- ParseXmlToIso1(): Exact port of VC2022 parse_xml_to_iso1()
- EncodeIso1ExiDocument(): Exact port of VC2022 encode_iso1ExiDocument()
- Choice 76 (V2G_Message) encoding with identical logic
- BulkChargingComplete ignore behavior preserved

⚡ **Call Sequence Alignment**
- Old: EncodeV2GMessage() → direct EXI encoding
- New: EncodeV2GMessage() → Iso1EXIDocument → EncodeIso1ExiDocument()
- Exact VC2022 call chain: init → parse → encode → finish

🔍 **1:1 Debug Comparison Ready**
- C# exiDoc.V2G_Message_isUsed ↔ VC2022 exiDoc->V2G_Message_isUsed
- Identical structure enables line-by-line debugging comparison
- Ready for precise 1-byte difference investigation (41 vs 42 bytes)

📁 **Project Reorganization**
- Moved from csharp/ to Port/ for cleaner structure
- Port/dotnet/ and Port/vc2022/ for parallel development
- Complete build system and documentation updates

🎯 **Achievement**: 97.6% binary compatibility (41/42 bytes)
Next: 1:1 debug session to identify exact byte difference location

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Port/dotnet/published/V2GDecoderNet.deps.json

@@ -0,0 +1,23 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v8.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v8.0": {
+      "V2GDecoderNet/1.0.0": {
+        "runtime": {
+          "V2GDecoderNet.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "V2GDecoderNet/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

Port/dotnet/published/V2GDecoderNet.runtimeconfig.json

@@ -0,0 +1,13 @@
+{
+  "runtimeOptions": {
+    "tfm": "net8.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "8.0.0"
+    },
+    "configProperties": {
+      "System.Reflection.Metadata.MetadataUpdater.IsSupported": false,
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
+    }
+  }
+}