Review shell scripts

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/configs/user/console/nix-develop/template.nix

@@ -0,0 +1,30 @@
+{
+  inputs = {
+    nixpkgs = {
+      type = "github";
+      owner = "karaolidis";
+      repo = "nixpkgs";
+      ref = "integration";
+    };
+
+    flake-utils = {
+      url = "github:numtide/flake-utils";
+    };
+  };
+
+  outputs =
+    { nixpkgs, ... }@inputs:
+    inputs.flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          packages = [ ];
+        };
+
+        formatter = pkgs.nixfmt-rfc-style;
+      }
+    );
+}