Control Loop Optimisation related scripts

[wiki:PACS/FM_ILT_Procedures/TestProcedures/ControlLoopOptimisation/GratingPid Grating PID controller parameters]
[wiki:PACS/FM_ILT_Procedures/TestProcedures/ControlLoopOptimisation/ChopperPid Chopper PID controller parameters]
[wiki:PACS/FM_ILT_Procedures/TestProcedures/ControlLoopOptimisation/InternalCalibrationSources Internal Calibration Sources]
[wiki:PACS/FM_ILT_Procedures/TestProcedures/ControlLoopOptimisation/FwPhot Phot Filter Wheel]
[wiki:PACS/FM_ILT_Procedures/TestProcedures/ControlLoopOptimisation/FwSpec Spec Filter Wheel]