place missing x501 schema file in build

opendj-server-legacy/resource/schema/00-x501.ldif

@@ -0,0 +1,26 @@
+# The contents of this file are subject to the terms of the Common Development and
+# Distribution License (the License). You may not use this file except in compliance with the
+# License.
+#
+# You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
+# specific language governing permission and limitations under the License.
+#
+# When distributing Covered Software, include this CDDL Header Notice in each file and include
+# the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
+# Header, with the fields enclosed by brackets [] replaced by your own identifying
+# information: "Portions Copyright [year] [name of copyright owner]".
+#
+# Copyright 2006-2010 Sun Microsystems, Inc.
+# Portions Copyright 2024 3A Systems, LLC
+#
+# This file contains schema definitions derived from ITU-T Rec. X.501.
+#
+dn: cn=schema                                                           
+objectClass: top                                                        
+objectClass: ldapSubentry                                               
+objectClass: subschema
+nameForms: ( 2.5.15.16
+   NAME 'subentryNameForm'
+   DESC 'X.501, cl. 14.2.2: the Subentry name form'
+   OC subentry
+   MUST cn )