[zstdcli] Add --no-progress flag

The `--no-progress` flag disables zstd's progress bars, but leaves
the summary.

I've added simple tests to `playTests.sh` to make sure the parsing
works.

programs/fileio.h

@@ -66,6 +66,7 @@ void FIO_setOverlapLog(unsigned overlapLog);
 void FIO_setRemoveSrcFile(unsigned flag);
 void FIO_setSparseWrite(unsigned sparse);  /**< 0: no sparse; 1: disable on stdout; 2: always enabled */
 void FIO_setRsyncable(unsigned rsyncable);
+void FIO_setNoProgress(unsigned noProgress);
 
 
 /*-*************************************