add cli param for querying properties to rent

example:
python main.py --data-dir data/rs2 dump-listings --max-price 3500 --min-bedrooms 2 --max-bedrooms 4 --district islington -t rent

crawler/main.py

@@ -5,6 +5,7 @@ import importlib
 from rec.districts import get_districts
 from data_access import Listing
 import csv_exporter
+from rec.query import ListingType
 
 dump_listings_module = importlib.import_module('1_dump_listings')
 dump_detail_module = importlib.import_module('2_dump_detail')
@@ -41,6 +42,16 @@ def cli(ctx, data_dir: str):
 
 
 @cli.command()
+@click.option(
+    '--type',
+    '-t',
+    help='Type of listing to scrape',
+    type=click.Choice(
+        ListingType.__members__.keys(),
+        case_sensitive=False,
+    ),
+    required=True,
+)
 @click.option(
     '--min-bedrooms',
     default=1,
@@ -80,9 +91,11 @@ def dump_listings(
     max_bedrooms: int,
     min_price: int,
     max_price: int,
+    type: str,
 ):
     data_dir: str = ctx.obj['data_dir']
     query_parameters = dump_listings_module.QueryParameters(
+        listing_type=ListingType[type],
         district_names=set(district),
         min_bedrooms=min_bedrooms,
         max_bedrooms=max_bedrooms,