Hello Marvin,
Just to be sure, are you speaking about findings getting out of SonarLint?
Because S100 has been implemented from the start to be configurable using regular expressions: Just check it on SonarQube: java:S100
Now, in order to get it’s configuration, as usual, you would need to connect your project to a SonarQube instance (and I know you started a discussion already about sharing these configurations, so I would not continue this here).
Regarding configuration directly in SonarLint, not all IDE-flavors of SonarLint support custom configuration yet, but I think it’s on its way.
EDIT: and according to this release announcement, it should be already possible on Eclipse.
Cheers,
Michael