UseNOAAFileFormat option does not work for GOES-R imagery

[hdoverobinson]

goesdump/XRIT/GOES/ImageManager.cs

Line 312 in 5b6088f

if (UseNOAAFileFormat) {

contains unnecessary checks that don't allow GOES-R LRIT filenames to be used as image names.

The following was substituted in:
if (UseNOAAFileFormat) {
origName = origName != null ? Path.GetFileName (origName) : "";
string baseName = Path.GetFileNameWithoutExtension (origName);
return $"{baseName}.png";
}

This produces images with the same filename as the first LRIT in their respective segmentation sequences. False Color images are no longer produced - have to look into how to identify those images in the UseNOAAFileFormat if statement so they can retain their OSP filename