extractor: split up extraction process and allow overriding data dir path (#1302)

* extractor: split up extraction process and allow overriding `data` dir path

* lint: formatting

* deps: add CLI11 dependency

* extractor: refactor CLI arg handling

test/test_main.cpp

@@ -20,7 +20,7 @@
 int main(int argc, char** argv) {
   // hopefully get a debug print on github actions
   setup_cpu_info();
-  file_util::setup_project_path();
+  file_util::setup_project_path(std::nullopt);
   lg::initialize();
 
   ::testing::InitGoogleTest(&argc, argv);