New Updated version of JavaAppLauncher i.e 3.1.0

[833M0L3]

The JavaAppLauncher that was currently in the Jar2app is outdated and was having a problem with a newer version of the Java runtime.

This new JavaAppLauncher from https://github.com/tofi86/universalJavaApplicationStub/tree/master/src , was recently updated to work with the newest Java runtime and fixes the few issues that the people were having while passing the arguments in -j.

[Lucina]

This seems redundant as it is. You already have an option to use a custom stub with -e, and the default behaviour of having a binary stub is preferable over something that can't be signed (as per ddyer0 in #50). Also, unfortunately this repository hasn't been actively maintained for years, even #38 which should be a huge boon hasn't been merged.

[833M0L3]

Yeah, I just read the whole conversation in the comments. I guess I will delete this pull request then.