Add preset page format setting

[MariusAlbrecht]

Is your feature request related to a problem? Please describe.
when I create a new document it always starts off with a custom 794x1123px format. That's just A4 in px.

Describe the solution you'd like
a "Default page format" setting that gets applied to all newly created documents

Additional context
I mostly use A4 in my documents, idk if the app somehow infers this or if its actually a default independent of me.

[flxzt]

The document format actually gets restored from the last opened tab. I agree about adding saving a preset.