Add function to fetch all events from a feed

Function takes the feed id as argument (-f).

pymisp/api.py

@@ -1475,6 +1475,16 @@ class PyMISP(object):
     def get_stix(self, **kwargs):
         return self.get_stix_event(**kwargs)
 
+    # ###########################
+    # ########   Feed   #########
+    # ###########################
+    
+    def fetch_feed(self, feed_id):
+        session = self.__prepare_session()
+        url = urljoin(self.root_url, 'feeds/fetchFromFeed/{}'.format(feed_id))
+        response = session.get(url)
+        return self._check_response(response)
+    
     # ###########################
     # ####### Deprecated ########
     # ###########################