chore: adding devcontainer features

Author: signorecello

.devcontainer/devcontainer.json

@@ -1,15 +1,13 @@
-// For format details, see https://aka.ms/devcontainer.json. For config options, see the
-// README at: https://github.com/devcontainers/templates/tree/main/src/docker-existing-dockerfile
 {
-	"name": "Noir BB Dev Container",
+	"name": "Noirenberg Codespace",
 	"image": "mcr.microsoft.com/devcontainers/base:ubuntu",
 	"customizations": {
 		"vscode": {
 			"extensions": ["noir-lang.vscode-noir"]
 		}
 	},
 	"features": {
-		"ghcr.io/signorecello/noir-bb-devcontainer-feature/barretenberg:1.1.2": {},
-		"ghcr.io/signorecello/noir-bb-devcontainer-feature/noir:1.1.2": {}
+		"ghcr.io/aztecprotocol/devcontainer-feature/barretenberg:1.1.3": {},
+		"ghcr.io/aztecprotocol/devcontainer-feature/noir:1.1.3": {}
 	}
 }

.devcontainer/noirenberg.png

@@ -1,7 +1,11 @@
-# Tiny noir codespace
+![noirenberg banner](.devcontainer/noirenberg.png)
 
-This is just a codespace that comes with `noirup` and `bbup` in your path. Click here:
+# Noirenberg Codespace 🖥️
+
+This is a a codespace with Noir and Barretenberg. You can use it to start developing Noir programs with two clicks. 
 
 [![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/AztecProtocol/tiny-noir-codespace)
 
-That's it. Nothing to see here.
+Codespaces are free cloud machines ([ forup to 60 hours a month](https://github.com/features/codespaces)). 
+
+Powered by [devcontainer features](https://github.com/AztecProtocol/devcontainer-feature) you can reuse in any codespace.