recovery: Add ability to set title lines

Add the ability to change the contents of
the title lines, displayed at the top of
the screen. Once set, the same lines are
displayed for all menus until changed again.

Test: Recovery works
Bug: 78793464
Change-Id: I7ef5594b0d76dbbd2e01ad7508863af1270b2a2a
diff --git a/stub_ui.h b/stub_ui.h
index 67c338e..a3cf12b 100644
--- a/stub_ui.h
+++ b/stub_ui.h
@@ -67,6 +67,8 @@
                   const std::function<int(int, bool)>& /* key_handler */) override {
     return initial_selection;
   }
+
+  void SetTitle(const std::vector<std::string>& /* lines */) override {}
 };
 
 #endif  // RECOVERY_STUB_UI_H