Add skeleton for CLScatter op, reference and tests

- Adds dataset for tests
- Adds skeleton for function, operator, reference and tests

Resolves: [COMPMID-6889]
Signed-off-by: Mohammed Suhail Munshi <MohammedSuhail.Munshi@arm.com>
Change-Id: I7e57e8b4577fef6aa7421e672894c249cad6c5fa
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/11234
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
diff --git a/filelist.json b/filelist.json
index 9f0f302..ab7f16b 100644
--- a/filelist.json
+++ b/filelist.json
@@ -770,6 +770,15 @@
         ]
       }
     },
+    "Scatter": {
+      "files": {
+        "common": [
+          "src/gpu/cl/kernels/ClScatterKernel.cpp",
+          "src/gpu/cl/operators/ClScatter.cpp",
+          "src/runtime/CL/functions/CLScatter.cpp"
+        ]
+      }
+    },
     "Select": {
       "files": {
         "common": [