add fetching data from reporting_provider api

brian_dashboard_manager/services/api.py

+import requests
+
+
+def fetch_services(host):
+    """
+    Fetches the current service state from the Reporting Provider host
+    """
+    r = requests.get(f'{host}/scid/current')
+    r.raise_for_status()
+    services = r.json()
+    return services