Adds a log4j-transform-cli tool
          #148
        
          
      
                
     Merged
            
            
          
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This PR adds a simple
picocli-based tool to access the Configuration Converter API from the command line. Currently, two commands are available:config-file list-formatslists the available configuration file formats.config-file convertconverts configuration files from one format to another (e.g., a Log4j 1 Properties file to a Log4j 2 Core XML file).Part of apache/logging-log4j2#3220