Add option for user-defined lithology_properties table in the LithologyConfig object

        Path to the JSON configuration file that created this object.

    out_dir_lithology : str or Path

        Directory where lithology outputs will be written.

    lithology_properties_path: str or Path

        Path to the Excel table  with lithology properties.

    borehole_lithology_path : str or Path

        Path to the Excel or CSV file containing lithology data.

    borehole_lithology_sheetname : str

    config_file_path: str | Path

    out_dir_lithology: str | Path

    input_dir_lithology: str | Path

    lithology_properties_path: str |Path | None = None

    borehole_lithology_path: str | Path

    borehole_lithology_sheetname: str

    out_table: str

        if not isinstance(self.out_dir_lithology, Path):

            self.out_dir_lithology = base_dir_lithology / Path(self.out_dir_lithology)

        # Lithology properties table

        # Resolve user-supplied path

        if self.lithology_properties_path is not None:

            if not isinstance(self.lithology_properties_path, Path):

                self.lithology_properties_path = Path(self.lithology_properties_path)

            if not self.lithology_properties_path.is_absolute():

                self.lithology_properties_path = (

                        base_dir_lithology / self.lithology_properties_path

                ).resolve()

            if not self.lithology_properties_path.exists():

                raise FileNotFoundError(

                    f"Lithology properties file not found: "

                    f"{self.lithology_properties_path}"

                )

        return self