sombrero: Move tig to git module

hosts/sombrero/configuration.nix

@@ -69,7 +69,6 @@
     gnumake
     mkpasswd
     vim
-    tig
     unar
   ];
 

hosts/sombrero/modules/git/default.nix

@@ -18,6 +18,8 @@ in
           { path = ./gitconfig; }
         ];
       };
+
+      home.packages = [ pkgs.tig ];
     };
   };
 }