refactor(v2): init events (#7823)

creates events structures for initial projections and read models

internal/v2/user/machine_secret_set.go

@@ -0,0 +1,41 @@
+package user
+
+import (
+	"github.com/zitadel/zitadel/internal/crypto"
+	"github.com/zitadel/zitadel/internal/v2/eventstore"
+	"github.com/zitadel/zitadel/internal/zerrors"
+)
+
+type machineSecretSetPayload struct {
+	// New events only use EncodedHash. However, the ClientSecret field
+	// is preserved to handle events older than the switch to Passwap.
+	ClientSecret *crypto.CryptoValue `json:"clientSecret,omitempty"`
+	HashedSecret string              `json:"hashedSecret,omitempty"`
+}
+
+type MachineSecretHashSetEvent eventstore.Event[machineSecretSetPayload]
+
+const MachineSecretHashSetType = machinePrefix + ".secret.set"
+
+var _ eventstore.TypeChecker = (*MachineSecretHashSetEvent)(nil)
+
+// ActionType implements eventstore.Typer.
+func (c *MachineSecretHashSetEvent) ActionType() string {
+	return MachineSecretHashSetType
+}
+
+func MachineSecretHashSetEventFromStorage(event *eventstore.StorageEvent) (e *MachineSecretHashSetEvent, _ error) {
+	if event.Type != e.ActionType() {
+		return nil, zerrors.ThrowInvalidArgument(nil, "USER-DzycT", "Errors.Invalid.Event.Type")
+	}
+
+	payload, err := eventstore.UnmarshalPayload[machineSecretSetPayload](event.Payload)
+	if err != nil {
+		return nil, err
+	}
+
+	return &MachineSecretHashSetEvent{
+		StorageEvent: event,
+		Payload:      payload,
+	}, nil
+}