Batch insert trough DAO.insert

[danvelkov]

Is your feature request related to a problem? Please describe.
When we have a lot of entities for insertion to the database, it takes up a lot of time to upload them all.

Describe the solution you'd like
A solution would be a batch insert logic for the insert method, where we pass an array of entities to be inserted. This would save a lot of time and resources and will make the end-user experience better.