Merge pull request 'Fix #12: ydb course repository migrate to new v3' (#13) from fix/issue-12 into master

internal/kurious/service/service.go

@@ -55,7 +55,14 @@ func NewApplication(ctx context.Context, cfg ApplicationConfig, mapper domain.Co
 		organizationrepo = sqliteConnection.Organization()
 		repoCloser = sqliteConnection
 	case RepositoryEngineYDB:
-		return Application{}, errors.New("ydb is no longer supported")
+		ydbConn, err := adapters.NewYDBConnection(ctx, cfg.YDB, log.With(slog.String("db", "ydb")))
+		if err != nil {
+			return Application{}, fmt.Errorf("making ydb connection: %w", err)
+		}
+
+		courseadapter = ydbConn.CourseRepository()
+		organizationrepo = ydbConn.Organization()
+		repoCloser = ydbConn
 	default:
 		return Application{}, errors.New("unable to decide which db engine to use")
 	}