fix: ret pakkenavne og deprecation warning fra test

- Ret nvim → neovim (korrekt pakkenavn i Fedora-repos)
- Flyt mangojuice fra DNF til Flatpak (io.github.radiolamp.mangojuice)
- Ret ansible_processor → ansible_facts['processor'] (deprecation warning)

vars/dnf_packages.yml

@@ -10,12 +10,11 @@ dnf_packages:
   - steam
   - git
   - gh
-  - nvim
+  - neovim
   - tldr
   - btop
   - 1password
   - sublime-text
-  - mangojuice
   - gamemode
   - gamescope
   - obs-studio

vars/flatpak_packages.yml

@@ -12,3 +12,4 @@ flatpak_packages:
   - com.vysp3r.ProtonPlus
   - org.musicbrainz.Picard
   - io.github.lullabyX.sone
+  - io.github.radiolamp.mangojuice