See if the pipeline system can be replaced with nushell

The whole pipeline system is a bit complex and may be buggy in some edges cases.
We also have needs for some builtins command (such as sort, each, etc...) and we may not want to implements all those builtins ourselves.

One solution could be to use nushell, it has his own system of pipeline and implements lot of builtins that could be useful.

Therefore, we want to do a POC of the pipeline system with nushell.