Refactor crashpad initialization

Crashpad handler was initialized quite late since we were waiting for settings. However the settings in crashpad are persistent itself, hence we can start it at the earliest possible time and change the upload settings independently later. The only prerequisite is to have QCoreApplication constructed in order for the application name to be available.
ref T652

src/swiftguistandard/main.cpp

@@ -9,6 +9,8 @@
 #include "blackgui/enableforframelesswindow.h"
 #include "blackgui/guiapplication.h"
 #include "blackmisc/directoryutils.h"
+#include "blackmisc/crashhandler.h"
+#include "blackmisc/appstarttime.h"
 #include "swiftguistd.h"
 #include "swiftguistdapplication.h"
 
@@ -25,6 +27,8 @@ int main(int argc, char *argv[])
     CGuiApplication::highDpiScreenSupport(CGuiApplication::parseScaleFactor(argc, argv));
     QApplication qa(argc, argv);
     Q_UNUSED(qa); // application init needed
+
+    CCrashHandler::instance()->init();
     CSwiftGuiStdApplication a; // application with contexts
     a.setSignalStartupAutomatically(false); // application will signal startup on its own
     a.splashScreen(CIcons::swift256());