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/api/grpc/object/converter.go

@@ -82,7 +82,7 @@ func AddToDetailsPb(
 }
 
 func ToListDetails(
-	totalResult,
+	totalResult uint64,
 	processedSequence uint64,
 	viewTimestamp time.Time,
 ) *object_pb.ListDetails {

internal/api/grpc/object/v2/converter.go

@@ -26,9 +26,7 @@ func ToListDetails(response query.SearchResponse) *object.ListDetails {
 	details := &object.ListDetails{
 		TotalResult:       response.Count,
 		ProcessedSequence: response.Sequence,
-	}
-	if !response.Timestamp.IsZero() {
-		details.Timestamp = timestamppb.New(response.Timestamp)
+		Timestamp:         timestamppb.New(response.EventCreatedAt),
 	}
 
 	return details