Add lsif-java to the contrib module

[olafurpg]

The lsif-java command-line tool can be used to generate LSIF indexes for
Java codebases. I tested the changes locally and it seems to work as expected

❯ cs launch --default-channels=false --channel apps-contrib/resources/ lsif-java -- --help
https://repo1.maven.org/maven2/com/sourcegraph/lsif-java_2.13/0.2.0/lsif-java_2.13-0.2.0.pom
  100.0% [##########] 2.2 KiB (10.8 KiB / s)
https://repo1.maven.org/maven2/com/sourcegraph/lsif-java_2.13/0.2.0/lsif-java_2.13-0.2.0.jar
  100.0% [##########] 5.5 MiB (4.4 MiB / s)
USAGE
  lsif-java COMMAND [OPTIONS]

COMMANDS
  help              Print this help message
  version           Print the version of this program
  index             Automatically generate an LSIF index in the current working directory.
  index-semanticdb  Converts SemanticDB files into a single LSIF index file.

  Use 'lsif-java help COMMAND' for more information on a specific command.

[olafurpg]

Good idea, I removed the main class. Was just copy-pasting from the fastpass JSON 😅

[alexarchambault]

Thanks @olafurpg!