Allow edit tool to access files outside project (with confirmation) (#35221)

Now the edit tool can access files outside the current project (just
like the terminal tool can), but it's behind a prompt (unlike other edit
tool actions).

Release Notes:

- The edit tool can now access files outside the current project, but
only if the user grants it permission to.

crates/assistant_tool/src/assistant_tool.rs

@@ -216,7 +216,12 @@ pub trait Tool: 'static + Send + Sync {
 
     /// Returns true if the tool needs the users's confirmation
     /// before having permission to run.
-    fn needs_confirmation(&self, input: &serde_json::Value, cx: &App) -> bool;
+    fn needs_confirmation(
+        &self,
+        input: &serde_json::Value,
+        project: &Entity<Project>,
+        cx: &App,
+    ) -> bool;
 
     /// Returns true if the tool may perform edits.
     fn may_perform_edits(&self) -> bool;

crates/assistant_tool/src/tool_working_set.rs

@@ -375,7 +375,12 @@ mod tests {
             false
         }
 
-        fn needs_confirmation(&self, _input: &serde_json::Value, _cx: &App) -> bool {
+        fn needs_confirmation(
+            &self,
+            _input: &serde_json::Value,
+            _project: &Entity<Project>,
+            _cx: &App,
+        ) -> bool {
             true
         }