Automatically add -XX:+ShowCodeDetailsInExceptionMessages when launching #797
Description
When a program is launched with Java 14, it might be useful to automatically add -XX:+ShowCodeDetailsInExceptionMessages to the vmArgs, so that NPEs provide better troubleshooting informations. See https://www.baeldung.com/java-14-nullpointerexception for more details.
The flag should be added dynamically during launch, if not already present in the launch.json's "vmArgs" option. Better not generate the launch.json with the flag directly in it, as things will go wrong if the project's JDK version changes:
Unrecognized VM option 'ShowCodeDetailsInExceptionMessages'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
This enhanced behavior could be disabled with a new setting.