feat: api v2beta to api v2 (#8283)

# Which Problems Are Solved

The v2beta services are stable but not GA.

# How the Problems Are Solved

The v2beta services are copied to v2. The corresponding v1 and v2beta
services are deprecated.

# Additional Context

Closes #7236

---------

Co-authored-by: Elio Bischof <elio@zitadel.com>

internal/api/grpc/user/v2beta/otp.go

@@ -0,0 +1,42 @@
+package user
+
+import (
+	"context"
+
+	object "github.com/zitadel/zitadel/internal/api/grpc/object/v2beta"
+	user "github.com/zitadel/zitadel/pkg/grpc/user/v2beta"
+)
+
+func (s *Server) AddOTPSMS(ctx context.Context, req *user.AddOTPSMSRequest) (*user.AddOTPSMSResponse, error) {
+	details, err := s.command.AddHumanOTPSMS(ctx, req.GetUserId(), "")
+	if err != nil {
+		return nil, err
+	}
+	return &user.AddOTPSMSResponse{Details: object.DomainToDetailsPb(details)}, nil
+
+}
+
+func (s *Server) RemoveOTPSMS(ctx context.Context, req *user.RemoveOTPSMSRequest) (*user.RemoveOTPSMSResponse, error) {
+	objectDetails, err := s.command.RemoveHumanOTPSMS(ctx, req.GetUserId(), "")
+	if err != nil {
+		return nil, err
+	}
+	return &user.RemoveOTPSMSResponse{Details: object.DomainToDetailsPb(objectDetails)}, nil
+}
+
+func (s *Server) AddOTPEmail(ctx context.Context, req *user.AddOTPEmailRequest) (*user.AddOTPEmailResponse, error) {
+	details, err := s.command.AddHumanOTPEmail(ctx, req.GetUserId(), "")
+	if err != nil {
+		return nil, err
+	}
+	return &user.AddOTPEmailResponse{Details: object.DomainToDetailsPb(details)}, nil
+
+}
+
+func (s *Server) RemoveOTPEmail(ctx context.Context, req *user.RemoveOTPEmailRequest) (*user.RemoveOTPEmailResponse, error) {
+	objectDetails, err := s.command.RemoveHumanOTPEmail(ctx, req.GetUserId(), "")
+	if err != nil {
+		return nil, err
+	}
+	return &user.RemoveOTPEmailResponse{Details: object.DomainToDetailsPb(objectDetails)}, nil
+}