Install elementary icons

[meisenzahl]

Installs elementary's icons using meson.

Before

$ flatpak run --command=sh --devel org.gnome.Evince
[📦 org.gnome.Evince ~]$ find /app -type f -name *Evince.svg
/app/share/icons/hicolor/scalable/apps/org.gnome.Evince.svg

After

Installed the artifact with Sideload and validated with:

$ flatpak --user run --command=sh --devel org.gnome.Evince 
[📦 org.gnome.Evince ~]$ find /app -type f -name *Evince.svg
/app/share/icons/hicolor/48x48@2/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/64x64/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/16x16/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/32x32/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/16x16@2/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/24x24/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/128x128/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/32x32@2/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/64x64@2/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/128x128@2/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/24x24@2/apps/org.gnome.Evince.svg
/app/share/icons/hicolor/48x48/apps/org.gnome.Evince.svg

[danirabbit]

Nice! That makes sense. I forgot we could use cleanup here