feat: add compute_from_overte tool to calculate protocol signature from Overte source

tools/compute_from_overte.cpp

@@ -0,0 +1,62 @@
+// Compile and run this to get the exact protocol signature from Overte source
+// Compile: cd /home/mayatheshy/stardust/starworld/third_party/overte-src && \
+//   g++ -o /tmp/compute_protocol -I libraries/networking/src/udt \
+//   -I /usr/include/qt5 -I /usr/include/qt5/QtCore \
+//   /home/mayatheshy/stardust/starworld/tools/compute_from_overte.cpp \
+//   -lQt5Core -std=c++17 -fPIC
+
+#include <QCoreApplication>
+#include <QByteArray>
+#include <QDataStream>
+#include <QCryptographicHash>
+#include <QDebug>
+#include <iostream>
+#include <cstdint>
+
+// Copy the enum definitions and versionForPacketType from Overte
+#include "../../../third_party/overte-src/libraries/networking/src/udt/PacketHeaders.h"
+
+// We need to include the actual implementation
+// Since we can't easily link against Overte, let's just compute it inline
+
+int main(int argc, char *argv[]) {
+    QCoreApplication app(argc, argv);
+    
+    // Compute the protocol signature the same way Overte does
+    QByteArray buffer;
+    QDataStream stream(&buffer, QIODevice::WriteOnly);
+    
+    uint8_t numberOfProtocols = static_cast<uint8_t>(PacketType::NUM_PACKET_TYPE);
+    stream << numberOfProtocols;
+    
+    std::cout << "Number of packet types: " << (int)numberOfProtocols << std::endl;
+    std::cout << "Protocol versions:" << std::endl;
+    
+    for (uint8_t packetType = 0; packetType < numberOfProtocols; packetType++) {
+        uint8_t packetTypeVersion = static_cast<uint8_t>(versionForPacketType(static_cast<PacketType>(packetType)));
+        stream << packetTypeVersion;
+        
+        if (packetType < 20 || packetTypeVersion != 22) {
+            std::cout << "  [" << (int)packetType << "] = " << (int)packetTypeVersion << std::endl;
+        }
+    }
+    
+    QCryptographicHash hash(QCryptographicHash::Md5);
+    hash.addData(buffer);
+    QByteArray signature = hash.result();
+    
+    std::cout << "\nProtocol Signature:" << std::endl;
+    std::cout << "  Hex: " << signature.toHex().toStdString() << std::endl;
+    std::cout << "  Base64: " << signature.toBase64().toStdString() << std::endl;
+    
+    std::cout << "\nC++ array:" << std::endl;
+    std::cout << "std::vector<uint8_t> signature = {" << std::endl;
+    std::cout << "    ";
+    for (int i = 0; i < signature.size(); i++) {
+        printf("0x%02x", (unsigned char)signature[i]);
+        if (i < signature.size() - 1) std::cout << ", ";
+    }
+    std::cout << "\n};" << std::endl;
+    
+    return 0;
+}