feat: add native API client for common submission use case

this should work for simple API endpoint which requires an auth token.
if more is needed, you'll have to override telemetry handler

tests/test_telemetry.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8; -*-
 
-from unittest.mock import patch
+from unittest.mock import patch, MagicMock
 
 from wuttjamaican.testing import ConfigTestCase
 
@@ -160,9 +160,24 @@ class TestTelemetryHandler(ConfigTestCase):
         self.assertNotIn('errors', data)
 
     def test_submit_all_data(self):
+        profile = self.handler.get_profile('default')
+        profile.submit_url = '/testing'
 
-        # not (yet?) implemented
-        self.assertRaises(NotImplementedError, self.handler.submit_all_data)
+        with patch.object(mod, 'SimpleAPIClient') as SimpleAPIClient:
+            client = MagicMock()
+            SimpleAPIClient.return_value = client
+
+            # collecting all data
+            with patch.object(self.handler, 'collect_all_data') as collect_all_data:
+                collect_all_data.return_value = []
+                self.handler.submit_all_data(profile)
+                collect_all_data.assert_called_once_with(profile)
+                client.post.assert_called_once_with('/testing', data=[])
+
+            # use data from caller
+            client.post.reset_mock()
+            self.handler.submit_all_data(profile, data=['foo'])
+            client.post.assert_called_once_with('/testing', data=['foo'])
 
 
 class TestTelemetryProfile(ConfigTestCase):