Use `Intent.ACTION_MAIN` when launching an app

[Kazurin-775]

The current code (EInkLauncherView.java#L343) doesn't set an action for the Intent that launches an app. The action should be set to Intent.ACTION_MAIN for a launching Intent:

intent.setAction(Intent.ACTION_MAIN);

Or even better, use:

Intent intent = getPackageManager().getLaunchIntentForPackage("com.package.address");

If the action is not set, it defaults to null, which will break some apps (for example plateaukao/browser; also see this issue).

[Modificator]

Thanks,I fix it