feat(pkgs): Add difft and meld to useful packages

Change-Id: If02bfe371dd309e5fc15d5e21fe4ad41136e0562
Reviewed-on: https://git.clicks.codes/c/Chimera/NixFiles/+/831
Reviewed-by: Skyler Grey <minion@clicks.codes>
Tested-by: Samuel Shuert <coded@clicks.codes>
diff --git a/modules/home/shell/default.nix b/modules/home/shell/default.nix
index c6ad0d8..8cd2ee8 100644
--- a/modules/home/shell/default.nix
+++ b/modules/home/shell/default.nix
@@ -171,6 +171,8 @@
             pkgs.hyperfine
             pkgs.tmux
             pkgs.glow
+            pkgs.difftastic
+            pkgs.meld
           ]
         else
           [ ]