Use less generic variable names

The following discussion from !11 (merged) should be addressed:

• @jmfee started a discussion:

  • use typed Tuple hints
  • maybe inline the param constants since they are only used once?
  • response1 and response2 are kind of generic
  • buffer is an existing type, use a different variable name.

  def _download_debrisflow_data(
      webid: str,
      data_directory: str,
      gis_url: str = "https://earthquake.usgs.gov/arcgis/rest/services/ls/pwfdf_locations/MapServer/0/query"
  ) -> Tuple[Path, Path, str]:
      ...
      gis_query = requests.get(URLBASE, params).json()
      shapefile_url = ...
  
      shapefile_buffer = BytesIO(requests.get(shapefile_url).content)
      ...