[REQUEST] UI - Add FPS indicator to the progress bar

MCEBuddy Version: 2.6.4

Operating System: Win10 x64 22H2 19045.4780.

Summary of the suggestion:
Add an FPS indicator to the progress bar to give an indication of processing speed for the current file

If this isn’t readily available, or requires performance-impacting calculation to maintain during processing, then that’s fine. This should be the current FPS rate, not the overall rate. By current, an estimate based on the last few seconds is good enough. Just to give an idea how different encodings or settings in the profile might be reported during processing, to detect if there is a problem or not.

I would expect when MCEBuddy is paused, for the FPS to go to zero (0). Also, I think the “estimated completion time” is including paused time, and not stopping the clock when the procesing was paused.