Add support for 7z rom files

Thank you @carlosjdelgado

What's Changed

• Add support for 7z rom files by @carlosjdelgado in #2

New Contributors

• @carlosjdelgado made their first contribution in #2

Full Changelog: v0.4...v0.5

usage:
run.exe -d <datfilename> -r <romfoldername>

usage (example):

run.exe -d MAME_ROMs_253.dat -r roms

How-to:

1. download run.exe
2. download MAME dat file from here and place where run.exe is located
3. download neogeo.zip from here (click raw to download) and place where run.exe is located
4. supply your own arcade rom files and place them under a directory with a given name, e.g., roms. subfolder works here to, e.g., roms/arcade/neogeo

The overall files & directory structure would look like this:

NOTE: if they are neogeo roms, make sure you name the folder name to include the string neogeo, NOT neo-geo; Find the complete guide here