feat: add shell.nix

Signed-off-by: seth <[email protected]>

shell.nix

@@ -0,0 +1,27 @@
+{
+  pkgs ? import <nixpkgs> {
+    inherit system;
+    config = { };
+    overlays = [ ];
+  },
+  system ? builtins.currentSystem,
+}:
+
+pkgs.mkShellNoCC {
+  packages = with pkgs; [
+    # Node tools
+    nodejs
+    corepack
+    nrr
+
+    # Language servers
+    astro-language-server
+    typescript-language-server
+    nil
+
+    # Nix tools
+    deadnix
+    nixfmt-rfc-style
+    statix
+  ];
+}