Adding a simple dummy comparator to enable dumping (unsorted) data as long idb_cmp1 is still in progress

[realSnoopy]

Hi,

as long as idb_cmp1 is still in progress of being coded, how about just adding a simple dummy comparator for being able to still retrieve (unsorted) data?

in the code below (last lines) there is a simple comparator used by another spanish forensic project

https://github.com/IncideDigital/rvt2/blob/a520ed69146c3c479b9404330df1b44b39b2cb4f/plugins/common/RVT_skype.py