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/10/postgres/10_update.sql

@@ -0,0 +1,10 @@
+UPDATE 
+    eventstore.events e 
+SET 
+    creation_date = we.next_cd
+    , "position" = (EXTRACT(EPOCH FROM we.next_cd))
+FROM
+    wrong_events we
+WHERE 
+    e.event_sequence = we.event_sequence 
+    AND e.instance_id = we.instance_id;