Implement Operator API

Resolves: COMPMID-4512

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: Id12130365fa3fe2261160931dcc7affb6b467186
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/6031
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/filelist.json b/filelist.json
index b426411..c5abc62 100644
--- a/filelist.json
+++ b/filelist.json
@@ -6,7 +6,8 @@
     "src/common/utils/LegacySupport.cpp",
     "src/common/AllocatorWrapper.cpp",
     "src/common/ITensorV2.cpp",
-    "src/common/TensorPack.cpp"
+    "src/common/TensorPack.cpp",
+    "src/common/IOperator.cpp"
   ],
   "c_api": {
     "common": [
@@ -21,6 +22,10 @@
     ],
     "gpu": [
       "src/c/cl/AclOpenClExt.cpp"
+    ],
+    "operators":
+    [
+      "src/c/operators/AclActivation.cpp"
     ]
   },
   "gpu": {