Add update server keygen tool

tools/update-server/qtox-updater-genkeys/main.cpp

@@ -0,0 +1,35 @@
+#include <sodium.h>
+#include <QCoreApplication>
+#include <QByteArray>
+#include <QFile>
+#include <QDebug>
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication a(argc, argv);
+    (void) a;
+
+    QByteArray skey(crypto_box_SECRETKEYBYTES, 0);
+    QFile skeyFile("qtox-updater-skey");
+    if (!skeyFile.open(QIODevice::WriteOnly))
+    {
+        qCritical() << "Failed to open qtox-updater-skey";
+        return 1;
+    }
+
+    QByteArray pkey(crypto_box_PUBLICKEYBYTES, 0);
+    QFile pkeyFile("qtox-updater-pkey");
+    if (!pkeyFile.open(QIODevice::WriteOnly))
+    {
+        qCritical() << "Failed to open qtox-updater-pkey";
+        return 1;
+    }
+
+    crypto_box_keypair((uint8_t*)pkey.data(), (uint8_t*)skey.data());
+    skeyFile.write(skey);
+    pkeyFile.write(pkey);
+
+    qDebug() << "Wrote new keys to disk";
+    return 0;
+}
+

tools/update-server/qtox-updater-genkeys/qtox-updater-genkeys.pro

@@ -0,0 +1,13 @@
+QT += core
+QT -= gui
+
+TARGET = qtox-updater-genkeys
+CONFIG += console
+CONFIG -= app_bundle
+
+TEMPLATE = app
+
+SOURCES += main.cpp
+
+
+LIBS += -lsodium