Add karabiner, we now should be able to achieve sway parity on macos

with aerospace.

nix/home/darwin.nix

@@ -11,6 +11,10 @@ let
       ".config/aerospace"
       "aerospace"
     ]
+    [
+      ".config/karabiner"
+      "karabiner"
+    ]
   ];
 in
 {

nix/system/darwin.nix

@@ -19,6 +19,7 @@ in
     enable = true;
     casks = [
       "ghostty"
+      "karabiner-elements"
     ];
     brews = [
       "bitwarden-cli"
@@ -66,7 +67,7 @@ in
     keyboard = {
       enableKeyMapping = true;
       nonUS.remapTilde = true;
-      remapCapsLockToEscape = true;
+      remapCapsLockToEscape = false; # This is set to false as we leave this for Karabiner (mod tap with ctrl)
       swapLeftCtrlAndFn = false;
     };