add alarm if PEEP = Plateau

[waxzce]

seems stupid, but yeah, for sure, it have been tested

[jabby]

@waxzce what are the code, priority and number of resporatory cycle before trigger this alarm?

[Benhalor]

@Benhalor ask the regulatory team if this feature is still mandatory. As pointed ou by @jabby, code, priority and number of respiratory cycle before trigger this alarm should be defined