Change Request: P7ZIP command line support

Hi dev team, just a suggestion. If preferred, I could log it on GitHub (I haven’t as it’s not an issue but a suggestion for improvement). Thanks for your consideration.

Current Situation Presently there is no command line tool to extract 7-Zip archives in Lakka.

Desired Situation Include p7zip from LibreELEC System Tools package in the Lakka distribution.

Goal 7-Zip offers stronger compression than ZIP, it’s useful for long term storage of ROMs (backup). P7ZIP command line support would bypass the extra intermediate step of decompressing from 7-Zip and recompressing to ZIP before transferring ROMs to Lakka over a network. As an added bonus, it also supports extraction of RAR archives.