Capability to display sideloaded apks

[kevin-schmid]

Changed the App model to use the more generic PackageItemInfo. Everything else is done in the AppManager.

I used this stackoverflow post to add the getAppsThroughPackages method which returns a list that is combined with your queryIntentActivities lookup. I also had to change the startApp method to be able to launch intents without leanback.

One open issue: I can't load a banner, so I use the icon which looks kinda ugly. I changed the behaviour that if no banner is found the icon is always used.

[hugegreenbug]

I tried this patch out. I had the following issues apart from the one you mentioned above:

• Some apps displayed are not launchable and will cause launchy to crash since the intent is null
• Some apps are returned in both: getAppsThroughPackages and queryIntentActivities. In this case, the we should prefer queryIntentActivities. An example of this was the TED app.
• Some apps' icons are cut off and will need some scaling before being displayed
• If apps do not have a banner, we should make a background around the icon so it looks more like the others
• if apps do not have a banner, should there be a text label? Since the default icon is generic we won't know the difference between them