add row in middle of part in add_PART_row()

[kendonB]

I'd like to be able to add a row before/after a specific row (like in Word or Excel). My use case is that I'd like to replace some rows from a gtsummary::tbl_regression with another row after converting to flextable. The development philosophy of gtsummary is not to have these sorts of fine table management features but to leave that to gt or the other table environments it supports, including flextable.

[davidgohel]

Hello

we will try to implement this feature in the future :)