Need solution for numbering at table header

thanh.nd

Hello guys,

I'm very new in data table and struggling with an issue.

I want to custom data table with multi-column sorting. Everything is fine except I want to modify the UI of table. In particular, I want to add a small title (a number) next to the ascending or descending icon (see the attachment)

Is there any plugin or configuration to solve my problem?
Thanks and best regards!