Small improvements of the task terminal spawn behavior (#9399)

* Add a `reveal: always|never` field in task definitions from tasks.json
, allowing to customize task terminal behavior on spawn
* Ensure reveal: always reveals the terminal even if the old task is
already running


Release Notes:

- Added a `reveal: always|never` (`always` is a default) field in task
definitions from tasks.json , allowing to customize task terminal
behavior on spawn

---------

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

crates/task/src/oneshot_source.rs

@@ -2,7 +2,9 @@
 
 use std::sync::Arc;
 
-use crate::{SpawnInTerminal, Task, TaskContext, TaskId, TaskSource};
+use crate::{
+    static_source::RevealStrategy, SpawnInTerminal, Task, TaskContext, TaskId, TaskSource,
+};
 use gpui::{AppContext, Context, Model};
 
 /// A storage and source of tasks generated out of user command prompt inputs.
@@ -48,6 +50,7 @@ impl Task for OneshotTask {
             env,
             use_new_terminal: Default::default(),
             allow_concurrent_runs: Default::default(),
+            reveal: RevealStrategy::default(),
         })
     }
 }