[Refacto]: Cuts (PressureCut, FlowCut, HeatCut) should be in a dedicated Medium.Cuts

[pierre-eliep-met]

Is your refactoring request related to a problem? Please describe. Currently we have separate components that are not very easy to read to cut a quantity propagation :

• HeatLoss to cut enthalpy/temperature propagation
• PressureCut for pressure
• LoopBreaker for flow

Describe the solution you'd like This should be more uniform, and not in pipes but in a dedicated package like WaterSteam.LoopBreakers or WaterSteam.QuantityCuts and then

• HeatCut or HeatLoopBreaker to cut enthalpy/temperature propagation
• PressureCut or PressureLoopBreaker for pressure
• FlowCut or FlowLoopBreaker for flow

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[valentind-met]

Not relevant since loopcloser are purely mathematical artefacts while pressure cuts and heat losses are used for modeling purposes.

[pierre-eliep-met]

Sorry to get back to that @valentind-met but I discussed it with Nathalie, who said that they did not find a loop closer for enthalpy, but we actually have one, it's just that it is not clear where it is. Whereas if we had a subpackage of pipes, like Cuts we could explicitly put FlowCut, PressureCut and HeatCut. This would make the library more explicit and more user friendly, with less learning time

I know you said that pressure cuts are different from loopclosers, but in a lot of cases we use it the same : a quantity is imposed on both sides and we need to add a degree of freedom.