decompression and compression .jar

Some plugins now allow us to add or delete the command of that plugin, or some plugins have the same command, you will probably want to change some commands, but want to do that we must decompression . jar file, to edit the plugin.yml file in it, and compression it after edit plugin.yml. But the current Aternos is not yet available, so consider and update the decompression and compression .jar

I mean open archi** to change Aliases of the plugin