Added 2 new parameters to the build_archive_params function

[DacotahHarvey]

While communicating with Itay he gave us the option to include 2 new parameters when using the create_archive function. These parameters were

• skip_transformation_name (a true value will result in all files found in a zip download having their original name rather than the version that contains all transformations. a false value will include said transformations on the end of the file names)
• allow_missing (a true value will allow any missing files to be skipped when generating a zip file. These missing files will then be returned in the callback function. A false value will ensure that every file requested is present. Any missing files will cause an error to be returned through the callback)

[tocker]

Thanks for the PR!