feature(dashboard): add new retention chart type

packages/db/migrations/20241007210706_retention_mv.sql

@@ -0,0 +1,58 @@
+-- +goose Up
+-- +goose StatementBegin
+CREATE MATERIALIZED VIEW cohort_events_mv ENGINE = AggregatingMergeTree()
+ORDER BY (project_id, name, created_at, profile_id) POPULATE AS
+SELECT project_id,
+    name,
+    toDate(created_at) AS created_at,
+    profile_id,
+    COUNT() AS event_count
+FROM events_v2
+WHERE profile_id != device_id
+GROUP BY project_id,
+    name,
+    created_at,
+    profile_id;
+-- +goose StatementEnd
+-- +goose StatementBegin
+CREATE MATERIALIZED VIEW distinct_event_names_mv ENGINE = AggregatingMergeTree()
+ORDER BY (project_id, name, created_at) POPULATE AS
+SELECT project_id,
+    name,
+    max(created_at) AS created_at,
+    count() AS event_count
+FROM events_v2
+GROUP BY project_id,
+    name;
+-- +goose StatementEnd
+-- +goose StatementBegin
+CREATE MATERIALIZED VIEW event_property_values_mv ENGINE = AggregatingMergeTree()
+ORDER BY (project_id, name, property_key, property_value) POPULATE AS
+select project_id,
+    name,
+    key_value.keys as property_key,
+    key_value.values as property_value,
+    created_at
+from (
+        SELECT project_id,
+            name,
+            untuple(arrayJoin(properties)) as key_value,
+            max(created_at) as created_at
+        from events_v2
+        group by project_id,
+            name,
+            key_value
+    )
+where property_value != ''
+    and property_key != ''
+    and property_key NOT IN ('__duration_from', '__properties_from')
+group by project_id,
+    name,
+    property_key,
+    property_value,
+    created_at;
+-- +goose StatementEnd
+-- +goose Down
+-- +goose StatementBegin
+SELECT 'down SQL query';
+-- +goose StatementEnd