static excel2range(str) {
    const index = str.indexOf(':');
    if (index === -1) {
      throw new Error('Invalid excel range');
    }
    return {
      topleft: XTableUtils.excel2coord(str.substring(0, index)),
      bottomright: XTableUtils.excel2coord(
        str.substring(index + 1, str.length)
      ),
    };
  }
Transform an excel range to a decimal range.
@param {*} str