new options -W, -n, Rust Edition 2021...

Finally a new update after long period of silence! I am using it since first release and it just works. From real world usage since it's launch I learned a few little things that was annoying or are missing. In example being able to quickly list user defined core names which match the loaded ROM file is handy. But what's even more useful is to print the entire RetroArch command with all it's options that is used to run it.

Besides these changes, the internal code was updated to Rust Edition 2021, some libraries are updated and a few general code adjustments. These aren't things that have much of an impact to the end user, with the exception of the now colorful help.

This program still remains a simple commandline based application without a GUI and runs only on Linux. Just download the "enjoy_0.3.0.tar.gz" package, extract the program, don't forget to make it executable or use the simple installer.
"enjoyd.gz" is the debug version, which shouldn't be used normally.

[0.3.0] - September 2, 2022

• new: option -n and --list-cores to list all custom core names in section
  "[cores]" from user configuration, if a game is given too then only matching
  cores to the game will be printed
• new: option -W and --which-command, similar to --which but will print
  complete commandline used to run RetroArch
• changed: option -o and --open-config will now print path to the config too
• changed: better error message if a game file is not found, pointing to the
  file it was looking for
• bug: annoying error message when game run just fine, now checks for
  "exit status: 0" instead "exit code: 0"
• internal: replaced or updated some backend libraries
• internal: updated code base to Rust Edition to 2021