function setupTempFolders(config, tempContractsDir, tempArtifactsDir){
  checkContext(config, tempContractsDir, tempArtifactsDir);

  shell.mkdir(tempContractsDir);
  shell.mkdir(tempArtifactsDir);
}
Sets up temporary folders for instrumented contracts and their compilation artifacts
@param  {PlatformConfig} config
@param  {String} tempContractsDir
@param  {String} tempArtifactsDir