Add fragment frame metrics tracker

[ertugrulkaragoz]

Summary

Frame Metric tracking for Fragment was missing, so this MR introduces FragmentFrameMetricsTracker

Structure

• Create the FragmentFrameMetricsTracker class and extend it from FragmentManager.FragmentLifecycleCallbacks
• Implement the tracking logics. I borrowed the logics mostly from ActivityFrameMetricsTracker
• Create MessageListFragment and add recycler view.
• To simulate the expensive operations, I've added random Thread.Sleep's to each item inflation in MessageListAdapter