making test case for typing bug and fixing some small typing errors in bc

tests/policies/test_forward_pass.py

@@ -0,0 +1,14 @@
+import torch
+import pickle
+import json5
+from src.bc import BehaviorCloningPolicy
+config_path = "config/networks.json5"
+
+with open(config_path, 'r') as cfg:
+    config = json5.load(cfg)
+
+filestr = 'tests/policies/base_'
+
+batch = pickle.load(open(filestr+'_test_batch.pkl', 'rb'))
+policy = BehaviorCloningPolicy.load_model(config, filestr)
+action = policy(batch)