Start to implement prediction

src/toldg/train.py

@@ -0,0 +1,9 @@
+from toldg.models import Config, CsvConfig, Mapping, Transaction
+from toldg.process import process_csv_files
+
+
+def train(config: Config):
+    print("[train] start")
+    transactions = process_csv_files(config)
+    for t in transactions:
+        pass