chore: add IDX configuration so anyone can edit the project from idx.google.com (#5398)

* chore: add IDX configuration so anyone can edit the project from idx.google.com

* chore: add python, postgres and redis to the idx config

.idx/dev.nix

@@ -0,0 +1,16 @@
+{ pkgs, ... }: {
+
+  # Which nixpkgs channel to use.
+  channel = "stable-23.11"; # or "unstable"
+
+  # Use https://search.nixos.org/packages to find packages
+  packages = [
+    pkgs.nodejs_20
+    pkgs.python3
+  ];
+
+  services.docker.enable = true;
+  services.postgres.enable = true;
+  services.redis.enable = true;
+
+}