🚧(addons) introduce initial Microsoft Outlook add-in support (alpha)

Provide the minimal components required to support an Outlook
add-in: user authentication, JWT retrieval, and API calls to
generate meeting links.

This implementation is an early alpha: developer experience is
limited, documentation is incomplete, and the solution is not
white-labeled.

It's too early to consider these parts ready to ship into
production.

As a result, it is currently only available within the DINUM
frontend image.

src/addons/outlook/babel.config.json

@@ -0,0 +1,12 @@
+{
+  "presets": [
+    [
+      "@babel/preset-env",
+      {
+        "targets": {
+          "esmodules": false
+        }
+      }
+    ],
+  ]
+}