Added QueryResultTable bean for storing DB query results.
Modified executeQueryForResult method to return QueryResultTable object
Moved file to inside db directory
Created file for select queries
Modified SQL_FILE_PATH to get values from ConfigValues enum.
Added Buyer and Transaction bean classes
Added values for Query folder and file names
Moved file to db directory
Modified classpath
Added transaction controller class
Minor modifications in ConfigValues
Added method: getQueryColumns