Create databases in dbmanager

app/dbmanager.py

@@ -18,6 +18,7 @@ class DatabaseManager:
     def __init__(self, database_url: str, **kwargs: dict) -> None:
         if DatabaseManager.__instance is None:
             self.db = Alchemical(database_url, **kwargs)
+            self.db.create_all()
             DatabaseManager.__instance = self
         else:
             raise Exception("Attempted to create a second DatabaseManager instance")