feat(YouTube - Navigation buttons): Add description to preference screen

src/main/kotlin/app/revanced/patches/youtube/layout/buttons/navigation/NavigationButtonsPatch.kt

@@ -100,6 +100,10 @@ object NavigationButtonsPatch : BytecodePatch(
                         ),
                     ),
                 ),
+                StringResource(
+                    "revanced_navigation_buttons_preference_screen_summary",
+                    "Hide or change buttons in the navigation bar"
+                )
             )
         )