Feature request: collectFile with newLine to use line endings found in the file(s) it is collecting

[nh13]

When using the collectFile, the files being collected may have a specific line ending (e.g. \n for unix, \r\n for windows), but adding a newLine uses System.lineSeparator. I would like the line ending used in collectFile to prioritize the line endings that are found in the file. A potential solution would be to inspect the bytes as they're being written to detect any line endings and use that.

[pditommaso]

Nextflow assumes \n as line separate because it (officially) runs on linus/*nix only