Bug 31666: Add job progress bar to stage-marc-import.pl

Bug 31666: Add job progress bar to stage-marc-import.pl

It would be nice if we had progress bars to indicate the progress of background jobs for scripts that utilize them.

This patch implements a reusable bootstrap based progess bar.

Test Plan:
1) Apply this patch
2) Stage a marc batch ( preferrably a large one to show the progress updating )
3) Note the new progess bar, verify it functions correctly.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>