Make export selection consistent between platforms and allow selecting which projects to export (#789)

* Experimenting with tests

* Overhaul handling of paths for pack files to always use standardized style

Also allows disabling export of all items

* Minor improvements

* Revert test things

* Minor tweaks

* Fix clippy warning

theseus/src/state/mod.rs

@@ -383,7 +383,7 @@ pub async fn init_watcher() -> crate::Result<Debouncer<RecommendedWatcher>> {
 
                         // At this point, new_path is the path to the profile, and subfile is whether it's a subfile of the profile or not
                         let profile_path_id =
-                            ProfilePathId::new(&PathBuf::from(
+                            ProfilePathId::new(PathBuf::from(
                                 new_path.file_name().unwrap_or_default(),
                             ));