[Feature request] Add support for using the existing launch.json, or add a similar configuration option

[jihu]

Using the built in run feature in vscode, it's possible to configure in great detail how something should be run. When it comes to java code, it is for example possible to configure vm arguments, and class path. And it has full knowledge about the Maven classpath in a Maven project.

It would be great if this extension could use the existing launch.json, or if it could add a similar configuration option.

Most times when I run java code, the code exists in a context, and uses several other classes, including 3rd party classes. Currently I can't see a way to run that using this extension.