feat: enable difftastic

Signed-off-by: Lander Van den Bulcke <landervandenbulcke@gmail.com>

home/lander/features/cli/git/default.nix

@@ -61,6 +61,12 @@ in
 
       # sign your commits!
       commit.gpgsign = true;
+
+      # use difftastic
+      difftastic = {
+        enable = true;
+        enableAsDifftool = true;
+      };
     };
     # This is optional, as `git identity` will call the `git-identity` script by itself, however
     # setting it up explicitly as an alias gives you autocomplete