This has been requested many times, but unfortunately has not yet been implemented.
I really hope that this and other “less tapping” updates will be a focus in the near future.
Btw: You don't have to open the packages. After 30 days, they open automatically and the Councilor automatically goes to the Council.
In the inventory, each automatically opened pack is then displayed as an extra line, which temporarily inflates the inventory to, for example, 120 lines instead of 20. Then you just have to tap the red button only once per package. That's significantly less tapping.
Perhaps BHG could further reduce the time as a temporary solution, e.g., 1 day instead of 30 days.