Check unicity of Cut object
Trying to improve on #3 (closed).
Now a set of Cuts is extracted from the list of Cuts and the name is used to check unicity.
For the moment I would not constraint the Cut name to be the same as the object label. Anyway the categories can be defined dynamically in functions so the name of the Cut is just used in case we want to import them from external libraries.
Thinking about how to export it properly (probably by creating a .pickle with the functions? if we need 1to1 reproducibility)