home: add vim

This actually uses neovim... I'm done with trying to be compatible with
both I haven't actually migrated my configuration to it yet, this is not
even the bare minimum.

We'll get there :-)

home/default.nix

@@ -13,6 +13,7 @@
     ./secrets # Home-manager specific secrets
     ./ssh.nix
     ./tmux.nix
+    ./vim
     ./xdg.nix
     ./zsh
   ];

home/vim/default.nix

@@ -0,0 +1,14 @@
+{ pkgs, ... }:
+{
+  programs.neovim = {
+    enable = true;
+    # All the aliases
+    viAlias = true;
+    vimAlias = true;
+    vimdiffAlias = true;
+
+    plugins = with pkgs.vimPlugins; [
+      vim-nix
+    ];
+  };
+}