Replace 'file0' with actual file name

[KyleAustinNI]

First off, great work on this tool, we use it frequently and it has been very helpful to view stdf files quickly and easily.

One change that would make it easier to report results is to have a way to replace the file name with a logical name. Having to switch back and forth between Detailed Info tab and Trend Chart tab to understand which file is which can be inefficient. It would be easier to communicate if we can add a custom label, or if it can inherit the file name that is already there. Text can be resized if it is a long file name so it can fit, but it would be useful to have.

Appreciate it.