Adds GPC EOS delay line

Load.py

@@ -221,6 +221,10 @@ mnemonics = {
                 'key':'data.image.pixels',
                 'dim':['8cam1_y', '8cam1_x']},
 
+    # GPC 
+    "GPC_EOS_DelayLine": {'source':'SCS_CDIDET_GRD/MOTOR/IMAGER',
+                 'key':'actualPosition.value',
+                 'dim':None},
     
     # FFT
     "scannerX": {'source':'SCS_CDIFFT_SAM/LMOTOR/SCANNERX',