Add initial package.json scripts task autodetection (#32497)

Now, every JS/TS-related file will get their package.json script
contents added as tasks:

<img width="1020" alt="image"
src="https://github.com/user-attachments/assets/5bf80f80-fd72-4ba8-8ccf-418872895a25"
/>

To achieve that, `fn associated_tasks` from the `ContextProvider` was
made asynchronous and the related code adjusted.

Release Notes:

- Added initial `package.json` scripts task autodetection

---------

Co-authored-by: Piotr Osiewicz <piotr@zed.dev>

crates/languages/src/go.rs

@@ -510,9 +510,10 @@ impl ContextProvider for GoContextProvider {
 
     fn associated_tasks(
         &self,
-        _: Option<Arc<dyn language::File>>,
+        _: Arc<dyn Fs>,
+        _: Option<Arc<dyn File>>,
         _: &App,
-    ) -> Option<TaskTemplates> {
+    ) -> Task<Option<TaskTemplates>> {
         let package_cwd = if GO_PACKAGE_TASK_VARIABLE.template_value() == "." {
             None
         } else {
@@ -520,7 +521,7 @@ impl ContextProvider for GoContextProvider {
         };
         let module_cwd = Some(GO_MODULE_ROOT_TASK_VARIABLE.template_value());
 
-        Some(TaskTemplates(vec![
+        Task::ready(Some(TaskTemplates(vec![
             TaskTemplate {
                 label: format!(
                     "go test {} -run {}",
@@ -631,7 +632,7 @@ impl ContextProvider for GoContextProvider {
                 cwd: module_cwd.clone(),
                 ..TaskTemplate::default()
             },
-        ]))
+        ])))
     }
 }