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/Zallad3D SceneClass/BillboardParticle.cpp

@@ -0,0 +1,24 @@
+// BillboardParticle.cpp: implementation of the CBillboardParticle class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#include "BillboardParticle.h"
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+CBillboardParticle::CBillboardParticle()
+{
+
+}
+
+CBillboardParticle::~CBillboardParticle()
+{
+
+}
+
+void CBillboardParticle::Create(vector3 vecPos)
+{
+	
+}