[Feature Request] Option to add a BLANK PAGE

[githubuser181226]

Is your feature request related to a problem? Please describe.
In mixed simplex and duplex scans, it's faster to print a document in one go, instead of manually printing single and double page separately. To achieve that I manually add blank pages after each single page scan.
Currently to do it in the program the fastest way I found is to first make a blank run on a scanner and then copy and paste that blank scan.

Describe the solution you'd like
It would be much faster and easier to have an option to:

1. add blank page before
2. add blank page after

The orientation and the size of the blank page should be determined automatically by selection.

If there are no pages to select or no page is selected, the blank page should have the orientation and the size based on currently set default scanning profile.

Describe alternatives you've considered
Alternatively, put a blank page only as a "tag" without set orientation nor size and only determine those upon exporting or printing by the direct neighboring page to match the duplex printing.
If blank page tag is at an odd position, use orientation and size of the page directly following it (or based on default scan profile if there is no following page).
If blank page tag is at an even position, use orientation and size of the page directly preceeding it (or default as above).

Additional context
n/a