Bug fix start (#1738)

* fix bug on linux; added start to the stable list

* add to stable and fix clippy lint

src/plugins/nu_plugin_stable_start.rs

@@ -0,0 +1,9 @@
+use nu_plugin::serve_plugin;
+use nu_plugin_start::Start;
+
+fn main() {
+    serve_plugin(&mut Start {
+        filenames: vec![],
+        application: None,
+    });
+}