COMPMID-915: Create ResNet50 example

ResidualLayer node (COMPMID-916) also created as required for the ResNet
architecture.

Change-Id: I4fb4d2e08a8d3ce206f96f7946f5afc3e244676a
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/121185
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/src/graph/Graph.cpp b/src/graph/Graph.cpp
index 98d9590..b6c6822 100644
--- a/src/graph/Graph.cpp
+++ b/src/graph/Graph.cpp
@@ -77,6 +77,7 @@
 Graph::Graph()
     : _pimpl{ new Private() }
 {
+    graph_init();
 }
 
 void Graph::graph_init(const bool use_cl_tuner)