Workflows to write to split collection into 2

[lldelisle]

We could add 3 general workflows:

• split collection in 2 by samplesplan: one column is identifier, other column is group (new collection name)
• split collection in 2 by pattern: one collection contains identifiers which contains this pattern, another collection with identifiers which do not contain this pattern.
• split collection in 2 by comma-separated values: the user input would be 1,1,1,2,2,2 but this one is more error prone to me.

See #582

[wm75]

Yes, but what would be even better would be to have Apply Rules populate additional columns from an optional tabular input.
This way you could freely re-arrange collections based on metadata contained within a dedicated file.

[lldelisle]

Yes but Apply Rule is not so easy for most of users. If @pavanvidem or @wm75 are not working on this. I will do it.

[pavanvidem]

I am not currently working on this.

If we have some usecases of such workflows, we should implement it. If it is only for DESeq2 tool, then I think we should invest time in updating the tool.

[lldelisle]

I regularly need to split collection based on pattern so I implemented it in #593