Support absolute paths in the ide-twig.json

[m-vo]

In Contao CMS we are dumping an auto-generated ide-twig.json file into a sub directory of <project>/var, so that developers get code completion for our dynamic template namespaces. This works nicely if the directory is not ignored in PHPStorm (which it is by default).

To work around this, it would be nice if we could create a symlink to this auto-generated ide-twig.json file from somewhere in the project root (or let the users do it). But unfortunately this won't work, because the relative paths would then (very likely) point to the wrong directories.

Would it be possible to also support absolute paths in the ide-twig.json file?