Restructure repository to include all source folders

Move git root from Client/ to src/ to track all source code:
- Client: Game client source (moved to Client/Client/)
- Server: Game server source
- GameTools: Development tools
- CryptoSource: Encryption utilities
- database: Database scripts
- Script: Game scripts
- rylCoder_16.02.2008_src: Legacy coder tools
- GMFont, Game: Additional resources

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

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

GameTools/NeoRylClient/Common.h

@@ -0,0 +1,23 @@
+#ifndef _COMMON_H_
+#define _COMMON_H_
+
+#ifndef _QWORD_DEFINED
+#define _QWORD_DEFINED
+typedef __int64 QWORD, *LPQWORD;
+#endif
+
+#define MAKEQWORD(a, b)	\
+	((QWORD)( ((QWORD) ((DWORD) (a))) << 32 | ((DWORD) (b))))
+
+#define LODWORD(l) \
+	((DWORD)(l))
+#define HIDWORD(l) \
+	((DWORD)(((QWORD)(l) >> 32) & 0xFFFFFFFF))
+
+// Read 4K of data at a time (used in the C++ streams, Win32 I/O, and assembly functions)
+#define MAX_BUFFER_SIZE	4096
+
+// Map a "view" size of 10MB (used in the filemap function)
+#define MAX_VIEW_SIZE	10485760
+
+#endif