🚧(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/frontend/default.conf

@@ -5,12 +5,6 @@ server {
 
   root /usr/share/nginx/html;
 
-  location = /.well-known/windows-app-web-link {
-      default_type application/json;
-      alias /usr/share/nginx/html/.well-known/windows-app-web-link;
-      add_header Content-Disposition "attachment; filename=windows-app-web-link";
-  }
-
   # Serve static files with caching
   location ~* ^/assets/.*\.(css|js|json|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
       expires 30d;