feat(init)!: allow turning off aliases for libs and plugins (#11550)

BREAKING CHANGE: the previous zstyle setting to disable `lib/directories.zsh` aliases has
been changed to the new syntax: `zstyle ':omz:lib:directories' aliases no`. See
https://github.com/ohmyzsh/ohmyzsh#skip-aliases

 to see other ways you can use this setting.
    
Co-authored-by: Carlo Sala <carlosalag@protonmail.com>