## Is your feature request related to a problem?

I want to run experiments on groups

## Describe the solution you'd like

Experiments support group target metrics, and the FF respects group selection.


## Describe alternatives you've considered

No groups :(

## Additional context



#### *Thank you* for your feature request – we love each and every one!

ee/clickhouse/views/test/test_clickhouse_experiments.py
self.assertAlmostEqual(response_data["probability"]["test"], 0.031, places=1)
        self.assertAlmostEqual(response_data["probability"]["test_1"], 0.158, places=1)
        self.assertAlmostEqual(response_data["probability"]["test_2"], 0.324, places=1)
        self.assertAlmostEqual(response_data["probability"]["control"], 0.486, places=1)
        self.assertEqual(response_data["significance_code"], ExperimentSignificanceCode.NOT_ENOUGH_EXPOSURE)
        self.assertAlmostEqual(response_data["expected_loss"], 1, places=2)
class ClickhouseTestTrendExperimentResults(ClickhouseTestMixin, APILicensedTest):
    @snapshot_clickhouse_queries
    def test_experiment_flow_with_event_results(self):
        journeys_for(
            {
                "person1": [
                    
                    {"event": "$pageview", "timestamp": "2020-01-02", "properties": {"$feature/a-b-test": "test"},},
                    {"event": "$pageview", "timestamp": "2020-01-02", "properties": {"$feature/a-b-test": "test"},},
                    {"event": "$pageview", "timestamp": "2020-01-02", "properties": {"$feature/a-b-test": "test"},},
                    {"event": "$pageview", "timestamp": "2020-01-02", "properties": {"$feature/a-b-test": "test"},},
                    {"event": "$pageview", "timestamp": "2020-01-02", "properties": {"$feature/a-b-test": "test"},},
                    
                    {
                        "event": "$feature_flag_called",
                        "timestamp": "2020-01-02",
                        "properties": {"$feature_flag": "a-b-test", "$feature_flag_response": "test"},
                    },
                    {
                        "event": "$feature_flag_called",
                        "timestamp": "2020-01-03",
                        "properties": {"$feature_flag": "a-b-test", "$feature_flag_response": "test"},
                    },
                ],