Has a developer I would like to create a contentset via aio cli

**Is your feature request related to a problem? Please describe.**
Currently with aio cli we can get or delete a contentset, but I don't see a way to create the content set with the command line

**Describe the solution you'd like**
As the API allow to create a contentset, it should be possible to implement it in the aio cli

**Describe alternatives you've considered**
I don't see any alternative.

**Additional context**
I need to create quickly a contentset based on some diff tool report in order to speed up what need to be re-sync.

Comienza examinando los comandos existentes de la CLI aio que obtienen y eliminan contentsets, y compáralos después con la operación de creación de contentsets de la API. Se considerará completado cuando la CLI pueda crear un contentset a partir de la información requerida por esa API y admita el flujo de trabajo de diff-tool indicado.

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