Move zet script to its own repository

modules/zet/default.nix

@@ -1,20 +1,26 @@
+{ inputs, ... }:
+
 {
   flake.modules.homeManager.base =
     { pkgs, ... }:
     {
-      home.packages = [
-        (pkgs.writeShellApplication {
+      home.packages =
+        let
           name = "zet";
+        in
+        [
+          (pkgs.writeShellApplication {
+            inherit name;
 
-          runtimeInputs = with pkgs; [
-            bashInteractive
-            coreutils
-            fzf
-            git
-          ];
+            runtimeInputs = with pkgs; [
+              bashInteractive
+              coreutils
+              fzf
+              git
+            ];
 
-          text = builtins.readFile ./script.sh;
-        })
-      ];
+            text = builtins.readFile "${inputs.zet}/${name}";
+          })
+        ];
     };
 }