Bug 33285: Allow specifying the delimeter for runreport.pl

Bug 33285: Allow specifying the delimeter for runreport.pl

To test:
1 - Write a report in koha
2 - perl misc/cronjobs/runreport.pl --format csv 1 (or correct report number)
3 - Note you get commas
4 - Apply patch
5 - Repeat #2 - no change
6 - perl misc/cronjobs/runreport.pl --format csv --separator "|" 1
7 - Now it is pipe delimited
8 - perl misc/cronjobs/runreport.pl --format tsv --separator "|" 1
9 - Error is reported, you cannot set separator unless csv
10 - Try other separators

Signed-off-by: Andrew Fuerste-Henry <andrewfh@dubcolib.org>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>