Add types to migrations.py

Co-Authored-By: Alexander Bavykin <bavykin.03@mail.ru>

Author: anafro

migration.py

@@ -1,23 +1,26 @@
-models = []
+from typing import Callable
 
 
-def up():
+models: list = []
+
+
+def up() -> None:
     for model in models:
         print(f'🛠️\tCreating a table for {model.table_name}...')
         model.up()
 
     print('✅\tMigration is complete', end='\n\n')
 
 
-def down():
+def down() -> None:
     for model in reversed(models):
         print(f'🗑️\tDeleting a table with {model.table_name}...')
         model.down()
 
     print('✅\tRollback is complete', end='\n\n')
 
 
-def reset():
+def reset() -> None:
     down()
     up()