feat(AveragePosition): method to emit average_base_coordinates message

reach/client/protocol/testsuite/operations.go

@@ -240,6 +240,30 @@ var testCases = []operationTestCase{
 
 		},
 	},
+	{
+		Name: "AveragePosition",
+		Run: func(t *testing.T, ops protocol.Operations) {
+			ctx := context.Background()
+
+			if err := ops.Connect(ctx); err != nil {
+				t.Errorf("%+v", errors.WithStack(err))
+				return
+			}
+
+			defer func() {
+				if err := ops.Close(ctx); err != nil {
+					t.Errorf("%+v", errors.WithStack(err))
+				}
+			}()
+
+			taskmessage, err := ops.AveragePosition(ctx)
+			if err != nil {
+				t.Errorf("%+v", errors.WithStack(err))
+				return
+			}
+			t.Logf("Task Message : %s", taskmessage)
+		},
+	},
 }
 
 func TestOperations(t *testing.T, opsFactory OperationsFactoryFunc) {