Add initial zsh implementation

modules/shell/default.nix

@@ -1,4 +1,5 @@
 [
   ./git.nix
   ./fish.nix
+  ./zsh.nix
 ]

modules/shell/zsh.nix

@@ -0,0 +1,54 @@
+{
+  lib,
+  pkgs,
+  vars,
+  ...
+}: {
+  home-manager.users.${vars.user} = {
+    programs.zsh = {
+      enable = true;
+      autocd = true;
+      dotDir = ".config/zsh";
+      enableAutosuggestions = true;
+      enableCompletion = true;
+      shellAliases = {
+        sl = "eza";
+        ls = "eza";
+        l = "eza -l";
+        la = "eza -la";
+        ip = "ip --color=auto";
+      };
+
+      initExtra = ''
+        [[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh
+      '';
+
+      zplug = {
+        enable = true;
+        plugins = [
+          {
+            name = "romkatv/powerlevel10k";
+            tags = ["as:theme" "depth:1"];
+          }
+        ];
+      };
+
+      plugins = [
+        {
+          name = "zsh-nix-shell";
+          file = "nix-shell.plugin.zsh";
+          src = pkgs.fetchFromGitHub {
+            owner = "chisui";
+            repo = "zsh-nix-shell";
+            rev = "v0.7.0";
+            sha256 = "149zh2rm59blr2q458a5irkfh82y3dwdich60s9670kl3cl5h2m1";
+          };
+        }
+      ];
+    };
+    programs.fzf = {
+      enable = true;
+      enableZshIntegration = true;
+    };
+  };
+}