io.joern.x2cpg.frontendspecific

This package solely exists to extract some code from the frontends that is shared between joern and the frontends, e.g. for parsing commandline arguments and running postprocessing passes.

If this code was to be in the frontend's subproject, joern would need to have classpath-dependencies on the frontends, inheriting all their transitive dependencies. As discussed in e.g. https://github.com/joernio/joern/issues/4625#issuecomment-2166427270 we want to avoid having classpath dependencies on the frontends and instead invoke them frontends as external processes (i.e. execute their start script). Otherwise we'll end in jar hell with various incompatible versions of many different dependencies, and complex issues with things like OSGI and JPMS.