tasks: Add spawn option by tag (#25650)

Closes #19497
Fixed conflicts from https://github.com/zed-industries/zed/pull/19498
Added tags to tasks selector

Release Notes:

- Added ability to spawn tasks by tag with key bindings
- Added tags to tasks selector


https://github.com/user-attachments/assets/0eefea21-ec4e-407c-9d4f-2a0a4a0f74df

---------

Co-authored-by: Kirill Bulatov <mail4score@gmail.com>

crates/zed_actions/src/lib.rs

@@ -230,6 +230,12 @@ pub enum Spawn {
         #[serde(default)]
         reveal_target: Option<RevealTarget>,
     },
+    /// Spawns a task by the name given.
+    ByTag {
+        task_tag: String,
+        #[serde(default)]
+        reveal_target: Option<RevealTarget>,
+    },
     /// Spawns a task via modal's selection.
     ViaModal {
         /// Selected task's `reveal_target` property override.