crash reporter: add EarlyExceptionsQueue

`util.send_exception_to_crash_reporter` is now useful and can be transparently
used even before the exception hook is set up.

electrum/gui/qt/__init__.py

@@ -403,8 +403,6 @@ class ElectrumGui(Logger):
         signal.signal(signal.SIGINT, lambda *args: self.app.quit())
         # hook for crash reporter
         Exception_Hook.maybe_setup(config=self.config)
-        if self.daemon.exception:  # if daemon errored too early, replay that now:
-            send_exception_to_crash_reporter(self.daemon.exception)
         # first-start network-setup
         try:
             self.init_network()