How to import license keys for different products on one file upload?

So this is an issue for anyone managing a lot of products. What would help is to be able to import license keys and their specifications (most importantly the product each license is associated with) at once.

Right now i have to upload license keys for each product seperately which is extremely time consuming when you have 100+ products.

With csv files importing all at once should be possible.

I appreciate the help if you have a solution to this.

Thank you very very much.