Add vim alias for Nvim if only Zsh is installed.

[dzintars]

Currently there is dumb task to add alias without even checking does the Zsh is presented on the system. There is no even any dependencies. It was because i knew that i need to install Zsh before i will install Nvim.
But this should be handled gracefully now.
I need to check if the Zsh presented. If it is, then i can add that alias.

But the general question is - should i add this alias in the Nvim role itself? Mby i should do that in some kind tweaks/customization role? What if i don't want to have that alias? What if i am not and not willing to use Zsh? Why would it be in the dependencies?