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/vc2022/src/codec/ByteStream.c

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2007-2018 Siemens AG
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*******************************************************************
+ *
+ * @author Daniel.Peintner.EXT@siemens.com
+ * @version 2017-03-02 
+ * @contact Richard.Kuntschke@siemens.com
+ *
+ * <p>Code generated by EXIdizer</p>
+ * <p>Schema: V2G_CI_MsgDef.xsd</p>
+ *
+ *
+ ********************************************************************/
+
+
+
+/* Avoid VS warning, put before your included header files */
+/* warning C4996: <20>fopen<65>: This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. */
+#define _CRT_SECURE_NO_DEPRECATE
+
+#include <stdio.h>
+
+#include "EXITypes.h"
+#include "ErrorCodes.h"
+
+#ifndef BYTE_STREAM_C
+#define BYTE_STREAM_C
+
+int readBytesFromFile(const char * filename, uint8_t* data, size_t size, size_t* pos) {
+	FILE* f;
+	int character;
+	int errn = 0;
+
+	f = fopen(filename, "rb");
+
+	if (f == NULL) {
+		errn = EXI_ERROR_INPUT_FILE_HANDLE;
+	} else {
+		/* read bytes */
+		while (errn == 0 && (character = getc(f)) != EOF) {
+			if (*pos >= size) {
+				errn = EXI_ERROR_OUT_OF_BYTE_BUFFER;
+			} else {
+				data[(*pos)++] = (uint8_t) character;
+			}
+		}
+		fclose(f);
+	}
+
+	return errn;
+}
+
+int writeBytesToFile(uint8_t* data, size_t len, const char * filename) {
+	size_t rlen;
+	FILE* f = fopen(filename, "wb+");
+
+	if (f == NULL) {
+		return -1;
+	} else {
+		rlen = fwrite(data, sizeof(uint8_t), len, f);
+		fflush(f);
+		fclose(f);
+		if(rlen == len) {
+			return 0;
+		} else {
+			return EXI_ERROR_OUTPUT_FILE;
+		}
+	}
+}
+
+
+#endif /* BYTE_STREAM_C */
+