create dir for datamapper core

git-svn-id: https://svn.wso2.org/repos/wso2/trunk/tools@179254 a5903396-d722-0410-b921-86c7d4935375
added datamapper core

git-svn-id: https://svn.wso2.org/repos/wso2/trunk/tools@179255 a5903396-d722-0410-b921-86c7d4935375
added datamapper pom

git-svn-id: https://svn.wso2.org/repos/wso2/trunk/tools@179256 a5903396-d722-0410-b921-86c7d4935375