Create devcontainer.json

Author: jfernandez

.devcontainer/devcontainer.json

@@ -0,0 +1,7 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {
+    "ghcr.io/devcontainers/features/rust:1": {},
+    "ghcr.io/devcontainers-contrib/features/pnpm:2": {}
+  }
+}