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.

internal/actions/object/user_grant.go

@@ -65,7 +65,7 @@ func UserGrantsFromQuery(c *actions.FieldConfig, userGrants *query.UserGrants) g
 	grantList := &userGrantList{
 		Count:     userGrants.Count,
 		Sequence:  userGrants.Sequence,
-		Timestamp: userGrants.Timestamp,
+		Timestamp: userGrants.LastRun,
 		Grants:    make([]*userGrant, len(userGrants.UserGrants)),
 	}