Tidyup of sap_icm_urlscan

@wvu-r7

I had done some cleanup of this and merged in #3148. Slight refactor to make it add the prefixes to the list.

We use the inbuilt OptPath logic to check if the wordlist file exists etc. Tidyup case statement and if statement logic.

Most of the changes are cosmetic, outputting includes full URL (easier to test!) and now stores to loot as well.

Also fixed the url_prefixes logic - in my instance it had params appended to the path which needed to be cleared off.