Chore: Add tempuser service (#53325)

* Chore: Add tempuser service

* Add implementation

* Fix linter; Inject tempUser into wire and HTTPServer

* Fix errors

pkg/services/temp_user/temp_user.go

@@ -0,0 +1,16 @@
+package tempuser
+
+import (
+	"context"
+
+	"github.com/grafana/grafana/pkg/models"
+)
+
+type Service interface {
+	UpdateTempUserStatus(ctx context.Context, cmd *models.UpdateTempUserStatusCommand) error
+	CreateTempUser(ctx context.Context, cmd *models.CreateTempUserCommand) error
+	UpdateTempUserWithEmailSent(ctx context.Context, cmd *models.UpdateTempUserWithEmailSentCommand) error
+	GetTempUsersQuery(ctx context.Context, query *models.GetTempUsersQuery) error
+	GetTempUserByCode(ctx context.Context, query *models.GetTempUserByCodeQuery) error
+	ExpireOldUserInvites(ctx context.Context, cmd *models.ExpireTempUsersCommand) error
+}