Changed the name of the EPICS channel for temperature control.

Target temperature of the ribbon heater outside the chamber and the measured temperature of the thermocouple
K1:VIS-{optic}_HEATER_PV => K1:VIS-{optic}_TEMPERATURE_HEATER_PV
K1:VIS-{optic}_HEATER_SV => K1:VIS-{optic}_TEMPERATURE_HEATER_SV
optic: PRM,PR2,PR3,BS,SRM,SR2,SR3,ITMX,ITMY,ETMX,ETMY

Measured temperature of the resistance thermometer (PT100) inside the chamber
K1:VIS-{optic}_CHAMBER_PV => K1:VIS-{optic}_TEMPERATURE_CHAMBER_PV
optic: PRM,PR2,PR3,BS,SRM,SR2,SR3

Currently, no devices are connected yet.