Add ability to attach rules as context (#29109)

Release Notes:

- agent: Added support for adding rules as context.

crates/zed_actions/src/lib.rs

@@ -201,7 +201,7 @@ pub mod assistant {
     #[serde(deny_unknown_fields)]
     pub struct OpenPromptLibrary {
         #[serde(skip)]
-        pub prompt_to_focus: Option<Uuid>,
+        pub prompt_to_select: Option<Uuid>,
     }
 
     impl_action_with_deprecated_aliases!(