Fix byte order for sessionid, add 64-bit conversion helpers - damn you C standard for no htonl/ntohl for 64-bit :(

src/client/net/tcp/tcp_client.cpp

@@ -247,6 +247,9 @@ namespace ColumnLynx::Net::TCP {
 
                     std::memcpy(&mConnectionSessionID, decrypted.data(), sizeof(mConnectionSessionID));
                     std::memcpy(&mTunConfig, decrypted.data() + sizeof(mConnectionSessionID), sizeof(Protocol::TunConfig));
+
+                    mConnectionSessionID = Utils::be64toh(mConnectionSessionID);
+
                     Utils::log("Connection established with Session ID: " + std::to_string(mConnectionSessionID));
                 
                     if (mSessionIDRef) { // Copy to the global reference