How to bundle a pre populated database in swift core Data

I know there are many related posts but I could notice that none of them explain the way to do it, most says to look the documentation, I looked already but seems to have a lack of information on bringing a pre populated database to Swift

I have an old database .sqlite with more than 60k lines three columns that I want to bring to my swift SQLite app using FMDB wrapper, the app is working in the iPhone, I tried to just drag the contacts.sqlite to the app but I can not access it

Tried to find a way to import my list to the original contacts.sqlite file built with swift but could not find any information how to do it

Is there anybody who alredy did that and willing to show me how to do it?