Feature request: show loading progress

[xgpt]

Feature request: "Loading. May take a minute or two while we process the comic for speech bubbles!" I love the app but until I looked at the GitHub website I thought that it was crashing/glitching due to the over 5-10 second loading time. I would have been patient and waited if I had a visual indication that it was in fact still loading. Comic trim will state "processing page 34/231" when converting cbr to cbz, perhaps Seeneva could add a similar "now processing page x of y pages".