Expose more controls

This release exposes the following interfaces for vmaf to the GUI: Resolution, Model, PSNR and SSIM output.
The popup windows for the child processes for ffmpeg and vmaf have been suppressed and a progress bar has been added (The progressbar is a little buggy because the child processes block the main process)

Add more user controls and Lets user view Logs from vmaf in notepad

ffmpeg and vmaf are included in the .zip file as well as the model files that vmaf needs. This release adds more controls for the user to use and allows the user to view the logs from vmaf in notepad when the logs are ready to view.

First working version- Compiled binaries

This is the first working version of vmaf-gui. it includes ffmpeg, vmaf and it's model files. Currently vmaf outputs to log.txt in the same folder as the binaries. In a future version I will work on displaying the aggregate vmaf score inside the gui