feat: Propogated subtask progress

Oh boy this is big.

> TaskStepProgress struct is now QMetaObject compatabile and can be sent through signals
> Task now has a method to propogates sub task progress it must be signal bound by each task containing a task wishing to report progress of it's children.
> Downloads report speed
> Tasks now have UUIDS to track them
  - use when reporting
  - use when logging
  - use when storeing them or objects related to them

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/InstanceList.cpp

@@ -788,6 +788,7 @@ class InstanceStaging : public Task {
         connect(child, &Task::abortStatusChanged, this, &InstanceStaging::setAbortable);
         connect(child, &Task::status, this, &InstanceStaging::setStatus);
         connect(child, &Task::progress, this, &InstanceStaging::setProgress);
+        connect(child, &Task::stepProgress, this, &InstanceStaging::propogateStepProgress);
         connect(&m_backoffTimer, &QTimer::timeout, this, &InstanceStaging::childSucceded);
     }