[general] How to deals with multi analysis lane ?

A lot of sequencing experiement are divided into several sample groups. It is especially true with amplicon/16S sequencing.
We need to find a way to run nextflow to performe several analysis based on only one lane.

The most basis idea is to launch one nextflow per sample group. But :

• how to select samples among others to run nextflow ?
• how to deals with NGL-Bi in this case ?
• How to deal with the worDir removing ?
• New option for output directory is needed
• Write documentation