Make Cosmic Files show .exe icons (#2070)

* [Feature Request] Make Cosmic Files show .exe icons like Dolphin

* Sped Up Icon Extraction

* Compacted Code

* Replace wrestool with pelite crate for .exe icon extraction

* Run PE icon extraction as external thumbnailer

* Use dedicated external EXE thumbnailer

* Remove embedded EXE thumbnailer

* Move cosmic-files-thumbnailer to new crate

---------

Co-authored-by: ZlordHUN <137647604+ZlordHUN@users.noreply.github.com>

src/thumbnailer.rs

@@ -172,3 +172,25 @@ pub fn thumbnailer(mime: &Mime) -> Vec<Thumbnailer> {
     let thumbnailer_cache = THUMBNAILER_CACHE.lock().unwrap();
     thumbnailer_cache.get(mime)
 }
+
+#[cfg(all(test, feature = "desktop"))]
+mod tests {
+    use super::Thumbnailer;
+    use std::path::Path;
+
+    #[test]
+    fn command_expands_thumbnailer_arguments() {
+        let thumbnailer = Thumbnailer {
+            exec: "cosmic-files-thumbnailer %o --size %s %i".to_string(),
+        };
+
+        let command = thumbnailer
+            .command(Path::new("input.exe"), Path::new("output.png"), 128)
+            .expect("valid thumbnailer command");
+        assert_eq!(command.get_program(), "cosmic-files-thumbnailer");
+        assert_eq!(
+            command.get_args().collect::<Vec<_>>(),
+            ["output.png", "--size", "128", "input.exe"]
+        );
+    }
+}