Tailwindcss, ScalaJS & Laminar. ScalablyTyped facade for SortableJS

Again submitting before writing a README with lessons learned, but!

• It was hard to figure out how to use Sortablejs library in ScalaJS.
  there's ScalablyTyped library that automatically generates Scala facade from Typescript code - this is great! But for Sortablejs the generated facade seems broken, so some things don't work without strange workarounds, good enough, let's move on...
• First time learned how to do dark theme in TailwindCSS
• Yay! I used <picture> tag to have reactive images without code listening to window size!
  this is good because images start to load before js can execute, this is more performant and quite a bit simpler
• First time used Signal combineWith to join "task list" state and "selected filter" state yay!
• Was hard to make "deletion" button in desktop mode visible on parent hover, yay TailwindCSS
• Found out about skipping "pointer events" to make 'checkmark' translucent for clicks

Overall this task still contained lots of new things, and was still quite engaging =0