Migrate zsh config

modules/shell/zsh/default.nix

@@ -0,0 +1,42 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.shell.zsh;
+in {
+  options.modules.shell.zsh = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    users.defaultUserShell = pkgs.zsh;
+
+    programs.zsh = {
+      enable = true;
+      enableCompletion = true;
+    };
+
+    user.packages = with pkgs; [
+      fd
+      fzf
+      jq
+      nix-zsh-completions
+      nnn
+      ripgrep
+      zsh
+      zsh-autosuggestions
+      zsh-fast-syntax-highlighting
+      zsh-history-substring-search
+    ];
+
+    env = {
+      ZDOTDIR   = "$XDG_CONFIG_HOME/zsh";
+      ZSH_CACHE = "$XDG_CACHE_HOME/zsh";
+    };
+
+    home.configFile = {
+      "zsh/.zshrc" = { source = ./.zshrc; };
+      "zsh/aliases.zsh" = { source = ./aliases.zsh };
+    };
+  };
+}