Add Rustdoc::current_dir method to run-make-support

Author: GuillaumeGomez

src/tools/run-make-support/src/rustdoc.rs

@@ -62,6 +62,12 @@ impl Rustdoc {
         self
     }
 
+    /// Set the path where the command will be run.
+    pub fn current_dir<P: AsRef<Path>>(&mut self, path: P) -> &mut Self {
+        self.cmd.current_dir(path);
+        self
+    }
+
     #[track_caller]
     pub fn run_fail_assert_exit_code(&mut self, code: i32) -> Output {
         let caller_location = std::panic::Location::caller();