message: [terminal] Adds missing fmtlib formatter for PixelCoordinate.
diff: @@ -936,5 +936,21 @@ struct formatter<terminal::ScreenType>
  }
  };
  +template <>
  +struct formatter<terminal::PixelCoordinate>
  +{
  + template <typename ParseContext>
  + constexpr auto parse(ParseContext& ctx)
  + {
  + return ctx.begin();
  + }
  +
  + template <typename FormatContext>
  + auto format(const terminal::PixelCoordinate coord, FormatContext& ctx)
  + {
  + return fmt::format_to(ctx.out(), "{}:{}", coord.x.value, coord.y.value);
  + }
  +};
  +
  } // namespace fmt
  // }}}
  