tasks: Add status indicator to the status bar (#10267)

Release Notes:

- Added task status indicator to the status bar.

crates/tasks_ui/src/settings.rs

@@ -0,0 +1,34 @@
+use schemars::JsonSchema;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, PartialEq, Default)]
+pub(crate) struct TaskSettings {
+    pub(crate) show_status_indicator: bool,
+}
+
+/// Task-related settings.
+#[derive(Serialize, Deserialize, PartialEq, Default, Clone, JsonSchema)]
+pub(crate) struct TaskSettingsContent {
+    /// Whether to show task status indicator in the status bar. Default: true
+    show_status_indicator: Option<bool>,
+}
+
+impl settings::Settings for TaskSettings {
+    const KEY: Option<&'static str> = Some("task");
+
+    type FileContent = TaskSettingsContent;
+
+    fn load(
+        default_value: &Self::FileContent,
+        user_values: &[&Self::FileContent],
+        _: &mut gpui::AppContext,
+    ) -> gpui::Result<Self>
+    where
+        Self: Sized,
+    {
+        let this = Self::json_merge(default_value, user_values)?;
+        Ok(Self {
+            show_status_indicator: this.show_status_indicator.unwrap_or(true),
+        })
+    }
+}