adding ms entra extension recommendation (#264)

Co-authored-by: ellymakuba <[email protected]>

Author: emakuba

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+  // See http://go.microsoft.com/fwlink/?LinkId=827846
+  // for the documentation about the extensions.json format
+  "recommendations": ["ms-azuretools.ms-entra"]
+}