Added Circ per #553

Author: schnuerle

providers.csv

@@ -23,3 +23,4 @@ Bolt Technology,7ea695ca-9de7-4b3b-9f3c-241b2045a1fe,https://bolt.eu,https://mds
 Grin,8a0ecfce-5fb3-451e-8069-434b79c8b01a,https://ongrin.com,https://open-data.grow.mobi/mds/,https://open-data.grow.mobi/api/v1/gbfs/
 Dott,0a899e3a-705a-46f2-9189-d78cc83a2db4,https://ridedott.com,https://mds.api.ridedott.com,https://gbfs.api.ridedott.com
 Superpedestrian,420e6e94-55a6-4946-b6b3-4398fe22e912,https://www.superpedestrian.com,https://wrangler-mds-production.herokuapp.com/mds,
+Circ,03d5d605-e5c9-45a1-a1dd-144aa8649525,https://www.circ.com,https://mds.bird.co,