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/eventstore/handler/v2/log.go

@@ -0,0 +1,23 @@
+package handler
+
+import (
+	"github.com/zitadel/logging"
+
+	"github.com/zitadel/zitadel/internal/eventstore"
+)
+
+func (h *Handler) log() *logging.Entry {
+	return logging.WithFields("projection", h.projection.Name())
+}
+
+func (h *Handler) logFailure(fail *failure) *logging.Entry {
+	return h.log().WithField("sequence", fail.sequence).
+		WithField("instance", fail.instance).
+		WithField("aggregate", fail.aggregateID)
+}
+
+func (h *Handler) logEvent(event eventstore.Event) *logging.Entry {
+	return h.log().WithField("sequence", event.Sequence()).
+		WithField("instance", event.Aggregate().InstanceID).
+		WithField("aggregate", event.Aggregate().Type)
+}