add resume training possibility

train.py

@@ -172,6 +172,17 @@ def get_latest_model():
     return last_model['date'], last_model['path']
 
 
+def resume_training(last_pt_path):
+    model = YOLO(last_pt_path)
+    results = model.train(data=yaml,
+                          resume=True,
+                          epochs=120,
+                          batch=12,
+                          imgsz=1280,
+                          save_period=1,
+                          workers=24)
+
+
 def train_dataset(existing_date=None, from_scratch=False):
     latest_date, latest_model = get_latest_model() if not from_scratch else None, None