Checks if a user has access to a specific app. Uses the match
utility, so anything passed in for the app will be passed to the match function. The needle
is a flat list of all user apps, and the haystack is what you pass into the component. You are
able to check one or multiple apps, as in the example below.
Usage:
{{has-app 'appId'}} <!-- if the user has access to the "appId" app, this returns true -->
{{has-app (array 'appId1' 'appId2')}} <!-- if the user has access to both apps, this returns true -->
{{has-app (array (array 'appId1' 'appId2'))}} <!-- if the user has access to either of the apps, this returns true -->