split pagesIndex into its own .ui file

add "Add page" button

set table header

WIP index view with pages table

implement save as

simplify db schema

add format target to Makefile

get rid of qt prefixes

use correct StandardButton values

properly set ruff up to format imports too

use pyside6 instead of pyside6-essentials

So I'm able to test run wm2k on a virtualenv that uses
system-site-packages.

ignore .envrc

implement New/Open

For some reason the file picker returns very slowly...

show initial message

disable certain actions by default

wire up Quit action with confirmation

use platform-native shortcuts & linux-native icons

use uic-compiled python class instead

init