manifest: add more gnome core apps
manifest: add more gnome core apps

Added apps: gnome-packagekit, baobab, file-roller, eog, brasero, devhelp, gnome-dictionary, gnome-screenshot, nautilus-sendto, yelp

chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io