web/queue: add remuxing progress & general improvements

and a bunch of other stuff:
- size and percentage in queue
- indeterminate progress bar
- if libav wasm freezes, the worker kill itself
- cleaner states
- cleaner props

web/src/lib/libav.ts

@@ -38,7 +38,7 @@ export default class LibAVWrapper {
 
         try {
             await libav.ffprobe([
-                //'-v', 'quiet',
+                '-v', 'quiet',
                 '-print_format', 'json',
                 '-show_format',
                 '-show_streams',