Add basic bash and Python tasks (#10548)

Part of https://github.com/zed-industries/zed/issues/5141

* adds "run selection" and "run file" tasks for bash and Python.
* replaces newlines with `\n` symbols in the human-readable task labels
* properly escapes task command arguments when spawning the task in
terminal

Caveats:

* bash tasks will always use user's default shell to spawn the
selections, but they should rather respect the shebang line even if it's
not selected
* Python tasks will always use `python3` to spawn its tasks now, as
there's no proper mechanism in Zed to deal with different Python
executables

Release Notes:

- Added tasks for bash and Python to execute selections and open files
in terminal

crates/project/src/task_inventory.rs

@@ -214,15 +214,20 @@ impl Inventory {
             .flat_map(|task| Some((task_source_kind.as_ref()?, task)));
 
         let mut lru_score = 0_u32;
-        let mut task_usage = self.last_scheduled_tasks.iter().rev().fold(
-            HashMap::default(),
-            |mut tasks, (task_source_kind, resolved_task)| {
-                tasks
-                    .entry(&resolved_task.id)
-                    .or_insert_with(|| (task_source_kind, resolved_task, post_inc(&mut lru_score)));
-                tasks
-            },
-        );
+        let mut task_usage = self
+            .last_scheduled_tasks
+            .iter()
+            .rev()
+            .filter(|(_, task)| !task.original_task().ignore_previously_resolved)
+            .fold(
+                HashMap::default(),
+                |mut tasks, (task_source_kind, resolved_task)| {
+                    tasks.entry(&resolved_task.id).or_insert_with(|| {
+                        (task_source_kind, resolved_task, post_inc(&mut lru_score))
+                    });
+                    tasks
+                },
+            );
         let not_used_score = post_inc(&mut lru_score);
         let current_resolved_tasks = self
             .sources

crates/project/src/terminals.rs

@@ -44,6 +44,7 @@ impl Project {
             .unwrap_or_else(|| Path::new(""));
 
         let (spawn_task, shell) = if let Some(spawn_task) = spawn_task {
+            log::debug!("Spawning task: {spawn_task:?}");
             env.extend(spawn_task.env);
             // Activate minimal Python virtual environment
             if let Some(python_settings) = &python_settings.as_option() {