* add check + test
* fix test
* add manifest
* fix linter
* add nolint
* separate err cond checks
* only collect relevant plugin files
* skip symlinks
* refactor
* add missing test files + enable scanning Chromium.app/
* remove test since case already covered
* remove unnecessary changes from before
* refactor
* remove comment
(cherry picked from commit 303352a89b)
Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>