Organize module management documentation and scripts into proper directories

This commit reorganizes the project structure for better maintainability:

Structure changes:
- docs/ - All documentation consolidated
  - README.md - Overview and quick start guide
  - MODULE_MANAGEMENT.md - Complete system documentation
  - MODULE_COMPATIBILITY.md - Module compatibility matrix
- scripts/ - All automation scripts
  - rebuild-with-modules.sh - Automated rebuild script

Updated references:
- All documentation now references correct script paths
- Docker compose notifications updated
- Cross-references between docs maintained

Benefits:
- Clear separation of documentation and scripts
- Better project organization and navigation
- Consistent with standard project structure conventions
- Easier maintenance and contribution

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

docker-compose-azerothcore-services.yml

@@ -1062,7 +1062,7 @@ services:
             echo "   docker compose -f /tmp/acore-dev-test/docker-compose.yml up -d"
             echo ""
             echo "3. Or use the automated rebuild script (if available):"
-            echo "   ./rebuild-with-modules.sh"
+            echo "   ./scripts/rebuild-with-modules.sh"
             echo ""
             echo "📋 NOTE: Source-based build will compile AzerothCore with all enabled modules"
             echo "⏱️  Expected build time: 15-45 minutes depending on system performance"