base: depend on nano
base: depend on nano

It's nice to have at least one CLI editor in the base install, to
edit config files, write commit messages etc.

Fixes #2244

mati865/MSYS2-packages,JPeterMugaas/MSYS2-packages,waterlan/MSYS2-packages,atom2013/MSYS2-packages,atom2013/MSYS2-packages,mati865/MSYS2-packages,Alexpux/MSYS2-packages,atom2013/MSYS2-packages,Alexpux/MSYS2-packages,Alexpux/MSYS2-packages,mati865/MSYS2-packages,waterlan/MSYS2-packages,Alexpux/MSYS2-packages,waterlan/MSYS2-packages,mati865/MSYS2-packages,atom2013/MSYS2-packages,waterlan/MSYS2-packages,JPeterMugaas/MSYS2-packages,JPeterMugaas/MSYS2-packages,JPeterMugaas/MSYS2-packages