feat(eventstore): increase parallel write capabilities (#5940)

This implementation increases parallel write capabilities of the eventstore.
Please have a look at the technical advisories: [05](https://zitadel.com/docs/support/advisory/a10005) and  [06](https://zitadel.com/docs/support/advisory/a10006).
The implementation of eventstore.push is rewritten and stored events are migrated to a new table `eventstore.events2`.
If you are using cockroach: make sure that the database user of ZITADEL has `VIEWACTIVITY` grant. This is used to query events.

cmd/setup/15/postgres/02_fe_from_projections.sql

@@ -0,0 +1,26 @@
+INSERT INTO projections.failed_events2 (
+    projection_name
+    , instance_id
+    , aggregate_type
+    , aggregate_id
+    , event_creation_date
+    , failed_sequence
+    , failure_count
+    , error
+    , last_failed
+) SELECT 
+    fe.projection_name
+    , fe.instance_id
+    , e.aggregate_type
+    , e.aggregate_id
+    , e.created_at
+    , e.sequence
+    , fe.failure_count
+    , fe.error
+    , fe.last_failed
+FROM 
+    projections.failed_events fe
+JOIN eventstore.events2 e ON
+    e.instance_id = fe.instance_id 
+    AND e.sequence = fe.failed_sequence 
+ON CONFLICT DO NOTHING;