feat(?): ⭐ Better Cache / Rework Page Caching

[Nudelsuppe42]

[1] Feature Description
Add a better cache of the page data / fix the current cache. It does not update/invalidate on form changes, which make it complicated for some users due to their browsers not registering the updated content => they still see old content though it was updated (by themselves)

[2] Screenshots
-/-

[3] Scope
Next.js has a feature for this im pretty sure.

[4] Additional context
-/-

[Nudelsuppe42]

As marked, will be finxed by #21