[PIController] Add commands On/Off/ExecLowLevelCommand + PIAxis/PIBox state machines + doc html + Device properties
requested to merge software-control-system/prestations/forfait-agile-tsn/picontroller:Sprint15_PIController_Delivery_Branch into main
[ICATHALES-369] - Device PIController initialisation [ICATHALES-370] - Add PIController properties [ICATHALES-376] - Add ExecLowLevelCommand [ICATHALES-375] - Add On and Off commands [ICATHALES-374] - States device handling [ICATHALES-374] - Add PIController doc html