[New Sample] Add 'squim_subjective' Model Computational Graph

Author: ooooo-create

samples/torchaudio/squim_subjective/graph_net.json

@@ -0,0 +1,5 @@
+{
+    "framework": "torch",
+    "num_devices_required": 1,
+    "num_nodes_required": 1
+}